Tighten them to the torques listed in this Chapter’s Specifications. Refer to the Chepler Specifications for the swingarm pivot bolt torque.

Some new, cisan orgie ol of tho cores! Remove the cyinder head Aamove tho cylinder Flemove the piston Remove the water puree Ramave the clutch Remove the primary a Remove tha Kckstarter Flemove the external shift mechanism Feamove tne altornator ror gear emove the interna shit mech Remove the crankshatt and connect accomplished by rev 6 Reassemoiy by sequence.

Remove the nuts once they’re all loose. Ifthe head is stuck, use 4 Wooden dowel inserted into the spark plug hole to lever the haad off Don’t attempt to pry the head off by inserting a screwdriver between the head and the cylinder – you’ll damage the sealing surfaces, 8 Rotate the piston to the top of the cyinder or stu a clean rag into the cylinder to prevent the entry of dobris.

Installation Also make sure there’s no clearance: between the reeds and the edges where they make contact with the: seats, 5 you’re werking on a through model, the reed valve! The sotews have locking agent on the threads, so you may need to usa an Impact driver, Remove tho reeds and install new ones. Atter rand reeds 8. Tighten the intake tube bolts in a criss-cross pattem to the torque isted in this Chapter’s Specifications.

Gylinder – removal, inspection and installation Note: For bikes usec in competition, periodic replacement of the cylin der is 4 routine maintenance procedure thet should be done at Intervals Nsted in Chapter 1. Removal Refer to ilustrations Next, measuta the cylin 2″ dlameior at the sama thros locations across the erankshett ax. Ifa rabore is done, 2n Svea piston and rings will be required as wel. Hols the eyfinder in a vise cushioned wh sot jaws.

Mount the Fons in the etl motor, compress the stones and slp the hone nto the: cylinder. Lubricate the cylinder thoroughly, tam on the dil and move the hone up and down in the cylinder at a pace which wll produce a fine crassnatah pattem en the eylindor wall with the crasshatch ines intersecting at aporoximately cegree angle. Wipe the oil out of the cylinder. Ba ura not to rotato the cylinder, as this may snag the piston rings on the exhaust Port A viood or plastic iammer handla can be used to gently tap the sylnder down, but don’t use much force or the piston will be dam- aged.

Piston and rings – removal, inspection and installation Note: For bikes used In competion, periodic replacement of the pis- This the citclips from falling into the crankcase if they ar dropped Removal Refer to’Mustrations If not visible due to carbon buildup, scribe an arrow into the pis before renioval.

Support the piston and pry the circlp o pointed taal or nesdie-nosed pliers see illustration 4 Push the piston pin out from the opposite end to treo the 0: from the rod see illustration. You may have to deb around tha groove to enable the pin to side out use a trian: this procedure.

Do not, under any circum- sfanes, Use a wire brush mounted in dil moter to remove deposits fom th piston the piston material fs aot and wil Bo exodad away by there rush 8 Use a piston ring groave cleaning too! Ia too isnot avaiable, a piece broken afte oid rng Wil do the job, Be very caret to remove only the ca an deponts.

H any of the above problem 68th causes must be correctad or the damago wil Cou Nessie the piston ngrto-grbove clearance side clearanco even inate p nd slipping a feeler gauge: Tour cations around te tonsil lating a new piston ring in the ring groove an 6 t. Check tne clearinca a hr9 oF Ifthe clearance is greater than specified, reW Pi mente sed when tho engine is reassebied ick the plston-to-bore cioarance by me Fron 10 ang the piston diamioter see Ilustration : Mest Acie he ski on tho thrust faces at 2 cearen ana 2 fe Bilon pn, ak the speciiod cistance up rom the Bettom of Ye Sitch the piston diametor from the bore ameter Vo CN eraos.

Iie greater than species. C Ifthe aopro- priate precision measuring tools are not avalabie, the pistor-to-cyin- der clearance can be obtained, though not quite 2s accurataly, using feeler gauge siock.

Foolar gauge stock comes. To check the clearance, slip a piace of eler gauge stock of the same thickness as the specified piston clearance into the eylinder along wth appropriate piston. Lubricate the pin and the rod noodle bearing wit 18 Repeat Step 15, this time inserting the piston pin into the con- stroke oll ofthe type listed in the Chapter 1 Specfcations. Comoro he tps ony Installation thar t fin the piston, Make sure the cls are propery sets Felco rane 1.

You may need to spre! Inspection, 3 Side thoinner cabie back and forth in the hous roves free. Rofor to Chapter 1 ed agust civic treoplay, Right crankcase cover Filer toitustratons However, becoming a little older, I realized that before winning the championships, you need to build a reliable corporate structure, establish production and create an excellent design. In recent years, we have been doing this and today we offer the Japanese products of very high quality, but we did not even begin to make efforts to participate in motorcycle races.

There he draws close attention to German NSU motorcycles, which were considered favorites in the and dice classes. Perhaps this fact caused subsequent rumors that Honda copied these motorcycles, although there are a number of significant structural differences between the NSU and Honda models. Subsequently, MV Agusta refuses this decision and returns to the race, and racing motorcycles from other manufacturers are sold.

One of them the Mondial racing model is acquired by Honda representatives. Japanese motorcycle designers did not copy this Italian motorcycle. He served as their inspiration and standard for which they aspired. Its distinguishing features are a stamped steel frame, a lever fork and a four-stroke engine with a volume of 50 cubes. Subsequently, models with 70 and 90 cc engines appeared. This motorcycle has become the world’s most popular two-wheeled vehicle with a motor.

Racer Naomi Tanaguchi shows the best result for the team, finishing sixth overall. Honda wins manufacturer cup. In races in both classes, Honda rider Mike Hailwood won first place.

The newspaper Isle of Man Examiner that day comes out with the headline “The East won an unconditional victory” on the first page. For this reason, the direction of motorsport is experiencing some difficulties. However, Honda’s motorcycle sales remain impressive. The Honda Super Cub motorcycle model is winning prizes due to its popularity.

This year, Honda opens its first foreign assembly plant – it became a plant in Belgium. In order to successfully perform in the dice class, while continuing to bet on 4-stroke power units, Honda launches the 3RC model with a six-cylinder engine of cm3.

This technical work of art makes a huge impression on the world of motor sports, but nonetheless, Phil Read won the Yamaha motorcycle championship this year. However, in 66 and 67, Mike Halewood at the world championships in the class of cubes comes to the finish line first on the Honda 3RC motorcycle model.

Of these, only one came to the finish – Dick Mann Dick Mann , but he finished first, which overshadowed the failure of other team members. The new engine was installed on the CR Elsinore model, which immediately received recognition by athletes as one of the best motorcycles for motocross. It was first presented to the public at a motorcycle exhibition in Cologne, and after only a year it began to be actively sold in the US market. The motorcycle is equipped with the first four-stroke liquid-cooled motor.

In addition, a cardan shaft is used as the main gear on it. Another innovation was the fuel pump – it was required to be installed because the Gold Wing had two fuel tanks – one between the steering wheel and the seat and the second hidden under the seat for optimal centering of the mass of the motorcycle. It became the NR model, in the V-shaped four-cylinder engine of which oval-shaped pistons were used.

It was a real breakthrough for the designers of engines. However, in the course of testing the motorcycle, many problems were identified that could be eliminated only after a year.

Nevertheless, in the races Honda NR suffered one failure after another and as a result did not bring the motorcycle team of the company a single victory. Prior to this, in this class, the company managed to win only in the manufacturers cup in In the next ten years, this motorcycle is considered the best road bike.

Its price is twice the usual stock Interceptor model. Its civilian version is equipped with a cc engine. The creation of designer Tadao Baba Tadao Baba combines the power of an open class motorcycle with the mass and controllability of the “six hundred. Thanks to the use of a floating exhaust valve, its engine uses the technology of complete combustion of fuel. The following year, the organizers of the championship refused to race in this class.

In total, more than two hundred million motorcycles have been produced on the basis of the Honda Cub engine in the world. Although this is not a sport bike, as fans of the brand expected, no one was disappointed in the motorcycle. Its main advantage was the optional automatic transmission with two clutches, which can be switched at a speed using buttons.

Another bright premiere of this year was the Honda Fury – a classic chopper-style road bike. The novelty gave experts an excuse to say that Honda again wants to enter into fierce competition with Harley-Davidson, as it was in the s of the last century. The motorcycle is manufactured at the company’s assembly plant in Thailand and sold worldwide.

If smooth choke operation is not obtainable, inspect choke cable for kinks or sharp bends in routing. The pilot systemsupplies fuel during engine operation with the throttle valve closed or slightly opened. Start engine and warm it up to operating temperature about 10 minutes. Turn pilot screw in clockwise until lightly seated. Turn screw out the specified number of turns.

Set idle speed to RPM. Always check throttle cable freeplay after adjusting idle speed and adjust if necessary. Slowly turn mixture screw clockwise using the pilot screw wrench until engine begins to miss. Slowly turn mixture screw counterclockwise until idle speed increases to maximum RPM. Continue turning counterclockwise until idle RPM begins to drop.

Center the pilot screw between the points in Step 5 and 6. Re adjust idle speed if not within specification. Start engine and warm it up thoroughly.

Adjust idle speed by turning the idle adjustment screw in clockwise to increase or out counterclockwise to decrease RPM. NOTE : Adjusting the idle speed affects throttle cable freeplay and electronic throttle control adjustment. To remove the ETC cover: 1. Use a medium flat blade screwdriver and insert blade into the pockets of the cover starting on the 1 position.

Twist screwdriver slightly while lifting on the cover to release snap. Repeat procedure at the other five locations as shown. NOTE : Do not attempt to remove cover until all latch points are released. Remove spark plug high tension lead. Clean plug area so no dirt and debris can fall into engine when plug is removed. Remove spark plug. Inspect electrodes for wear and carbon buildup. Look for a sharp outer edge with no rounding or erosion of the electrodes.

Clean with electrical contact cleaner or a glass bead spark plug cleaner only. Measure gap with a wire gauge. Refer to specifications for proper spark plug type and gap. Adjust gap if necessary by bending the side 0electrode carefully. If necessary, replace spark plug with proper type. Apply a small amount of anti-seize compound to the spark plug threads. Install spark plug and torque to ft. Refer to Electrical chapter for ignition timing procedure. It is recommended that the air filter and pre filter be replaced annually.

When riding in extremely dusty conditions, replacement is required more often. The pre filter should be cleaned before each ride using the following procedure:. Lift up on the rear of the seat. User Settings. Skip carousel. Carousel Previous.

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Report this Document. Flag for inappropriate content. Download now. Jump to Page. Search inside document. NOTE: Gives helpful information. Detailed descriptions of standard workshop procedures, safety principles and service operations are not included.

 
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1989 honda cr250 service manual free download.Honda CR250R Owner’s Maintenance Manual

 
If an oil seal and related parts have bbeen washed, apply proper grease to the lip of the oil seal. The return spring can be replaced separately, but if the splines are damaged the complete shaft must be replaced. Important information contained in this page like special notes, tips, proper procedures, complete specifications, torque specs and recommendations must be followed in the reference links to ensure that the task is performed in the proper flow and to manufacture specification recommendations. The World Is Flat 3. Ferdinando Sunday, 11 September NOTE : Do not attempt to remove cover until all latch points are released. Close suggestions Search Search.
 
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Service manual / Honda CRR – Frank! MXParts –

 

Disconnect the clutch cable as descrine Skde the lever and! Installation is th reverse of the removal stops. If the gear is wom or dariaged or the ae hon, the ton nouurig must bo replond with 8 0 Ce bteek the bearing surface in the center ofthe clutch housing for rans, scratetio and oxcessive wear. Measure the inside dla fine Bearing surtace, the Inside and outside diameters of the housing bushing and the bustung’s mounting surface on the Risin msinshalt.

Avo check Inna ofthe enutch canter Replace “0 cuten a s for scoring plies OO It the lining material of the fiction plates smells burnt or if it is Glazed, new parts are required. Before yous them. Primary drive gear – removal, inspection and Installation Removal Refer toiustrations You may be able to push the seal in with your thumbs; if not, tap itn vith hammer and block of wood or a socket the same diameter as the seal, Installation 5 Line up the punch marks, Install the shift pedal and tighten the pinch bolt External shift linkage Removal Refer to dustrations Unbolt the g with the paw!

Pull he stopper arm avvay from the shife drum am, then pull the cam off the shift drum see illustration. Remove the bolt and take the stopper arm and spring off the crankcase. Inspection efor to ustrations The return spring can be replaced separately, but if the splines are damaged the complete shaft must be replaced.

To replace the retum spring, remove the snap-ring and slide the spring off the spindt. Install the rew spring with ts ends toward the spindle arm, 0 thay ft securely over the tab when the spring s installed. Note: The Ssnap-ring should be installed with its chamfered edge facing the spring and must be securely engaged with its groove.

Replace the stopper arm if i’s wom where it contacts the shift cam. Replace the spring ft’s bent, Inspect the shifter pauls and the shift cam for wear an their con- tact surfaces see illustrations. Replace the paw springs if thra’s any doubt about their condition.

Pullthe stopper arm down and position the shift drum cam shift drum, aligning the hole in the back of the cam withthe pin shift drum. Engage the roller end of the stopper arm with the re Notch in the shift drum cam.

Meera ches cm pce nas cere seer ee illustration Tahten ;qude plats bolts socurely, but don’t overtghitan them and strip the ads, Place the shifter collar on the drum shifter soe illustration Make sure the thrust washer is in place on the gearshift spincle, n catstuly side the epindla into the crankcase, taking care not to nage the seal on the other side.

Leek fora punch rark on the end ofthe kickstartor at S68 one, make your own to align with the sit in the peda! Fplace worn or damaged parts Measure the inside diameter ofthe pinion gear ad idler gear. Disassembly Refer to ilustrations Check to make sure the dowel pins are in place in thei holes in the mating surfaca of the loft crankcase half see ilustration All ol passages should be blown outwith Compressed air and al traces of olf gasket should be removed from, the mating surfaces.

B Check the edges of tie grooves in the drum for signs of excessive ess ilusration Spin the shift drum bearing with fingers and replace Itifit’s rough, loose or ny.

Engage the fork fingars with the goar grooves so illustration. Note: I you’re to disassemble them right away, reinstall the thrust washers a 4 largo rubber band over both ends of each shaft sa tho goa slid of Disassembly Rotor to iustrations Replace the pled gears a a sof necessary. This motorcycle has become the world’s most popular two-wheeled vehicle with a motor. Racer Naomi Tanaguchi shows the best result for the team, finishing sixth overall.

Honda wins manufacturer cup. In races in both classes, Honda rider Mike Hailwood won first place. The newspaper Isle of Man Examiner that day comes out with the headline “The East won an unconditional victory” on the first page. For this reason, the direction of motorsport is experiencing some difficulties.

However, Honda’s motorcycle sales remain impressive. The Honda Super Cub motorcycle model is winning prizes due to its popularity. This year, Honda opens its first foreign assembly plant – it became a plant in Belgium. In order to successfully perform in the dice class, while continuing to bet on 4-stroke power units, Honda launches the 3RC model with a six-cylinder engine of cm3.

This technical work of art makes a huge impression on the world of motor sports, but nonetheless, Phil Read won the Yamaha motorcycle championship this year. However, in 66 and 67, Mike Halewood at the world championships in the class of cubes comes to the finish line first on the Honda 3RC motorcycle model. Of these, only one came to the finish – Dick Mann Dick Mann , but he finished first, which overshadowed the failure of other team members. The new engine was installed on the CR Elsinore model, which immediately received recognition by athletes as one of the best motorcycles for motocross.

It was first presented to the public at a motorcycle exhibition in Cologne, and after only a year it began to be actively sold in the US market. The motorcycle is equipped with the first four-stroke liquid-cooled motor. In addition, a cardan shaft is used as the main gear on it. Another innovation was the fuel pump – it was required to be installed because the Gold Wing had two fuel tanks – one between the steering wheel and the seat and the second hidden under the seat for optimal centering of the mass of the motorcycle.

It became the NR model, in the V-shaped four-cylinder engine of which oval-shaped pistons were used. It was a real breakthrough for the designers of engines. However, in the course of testing the motorcycle, many problems were identified that could be eliminated only after a year. Nevertheless, in the races Honda NR suffered one failure after another and as a result did not bring the motorcycle team of the company a single victory.

Prior to this, in this class, the company managed to win only in the manufacturers cup in In the next ten years, this motorcycle is considered the best road bike. Its price is twice the usual stock Interceptor model. Its civilian version is equipped with a cc engine. The creation of designer Tadao Baba Tadao Baba combines the power of an open class motorcycle with the mass and controllability of the “six hundred. Thanks to the use of a floating exhaust valve, its engine uses the technology of complete combustion of fuel.

The following year, the organizers of the championship refused to race in this class. In total, more than two hundred million motorcycles have been produced on the basis of the Honda Cub engine in the world. Although this is not a sport bike, as fans of the brand expected, no one was disappointed in the motorcycle.

Its main advantage was the optional automatic transmission with two clutches, which can be switched at a speed using buttons. Another bright premiere of this year was the Honda Fury – a classic chopper-style road bike.

The novelty gave experts an excuse to say that Honda again wants to enter into fierce competition with Harley-Davidson, as it was in the s of the last century.

The motorcycle is manufactured at the company’s assembly plant in Thailand and sold worldwide. In early , company representatives promise to begin selling the CBRR. Comments: Honda R Workshop Manual.

Honda c65m wiring diagrams. Honda C70 Workshop Manual Honda c72 and c77 wiring diagrams. Honda CB f workshop service manual. Honda cb-cl wiring diagrams. Honda CB Workshop Manual. Honda cbt wiring diagrams. Installation: 9. Reinstall pre-filter element over main filter. Be sure the element covers entire surface of main filter without folds, creases, or gaps. Reinstall filter on main filter mount. Place filter clamp over the assembly and tighten. NOTE: Apply a small amount of general purpose grease to the sealing edges of the filter before reinstalling.

NOTE: The air filter should rest on the filter support. Proper placement of the air filter is important to prevent rattles and air leaks. See Illustration above. Install air box cover and secure with clips. To check the oil level: 1. Set machine on a level surface.

Start and run engine for seconds. This will return oil to its true level in the engine sump. Stop engine, remove dipstick and wipe dry with a clean cloth. Reinstall dipstick, screwing into place. The dipstick must be screwed completely in to ensure accurate measurement. Remove dipstick and check to see that the oil level is in the normal range. The oil should be between the top of the bottom crosshatched area and the bottomof the top crosshatched area.

Add oil as indicated by the level on the dipstick. Do not overfill. NOTE: Do not fill the over the normal oil operating range. Filling over the normal operating range could cause a mist of oil to enter the air box.

NOTE: Rising oil level between checks in cool weather driving, can indicatemoisture collecting in the oil reservoir. If the oil level is over the full mark, change the oil. Inspect and adjust valve clearance while the engine is cold and the piston positioned at Top Dead Center TDC on compression stroke.

Remove the seat. Remove body panels and fuel tank as necessary to gain access to valve cover. Remove the spark plug high tension lead and remove the spark plug. Remove plastic valve plugs.

Remove timing inspection plug from recoil housing. Rotate engine slowly with recoil rope, watching the intake valve s open and close. The camshaft lobes should be pointing downward. In this position there should be clearance on all valves. Periodic Maintenance Chart. Engine Breather Filter 20 hrs Monthly Inspect and replace if necessary. Carburetor Float Bowl 50 hrs 6 months Drain bowl periodically and prior to storage.

Stop the engine and re check the oil level. Never run the engine in an enclosed area. The exhaust contains poisonous carbon monoxide gas that can cause loss of consciousness and may lead to death. Apply oll or grease to the other sliding surfaces not shown here.

If clutch lever or throt tle operation is not smooth, replace the cable. Do not reinstall used wheel bearings or seals. Any other manufacturer’s paste grease equivalent to the above may also be used. Wachne subjected fa severe ue Yequre more equa See 2 Replace every 2 year. Replacement requires mechanic! Replace the cable as required. Measure throttle grip free play at the throttle grip flange. Tighten the lock nut and reinstall the rubber cap.

Apply air filter oll to whole surface of the telement and rub it with both hands to saturate the element. Aftor Install the element holder, aligning the pin on the holder with the hole in the element. Install the element into the air cleaner case with the tab of the clement facing up. Replace it necessary. Check that all cooling system items are secure and not leaking. Replace, if necessary. Check the tightness of the hose clamps and radiator mounting bolts. Remove the master link and the drive chain.

Rofer to section 18 for brake bleeding procedures. Tighten any loose fittings. Tighten the lock nut. CRFX catalogue soare parts. Grit: The Power of Passion and Perseverance.

 
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1989 honda cr250 service manual free download. Honda CR250R Owner’s Maintenance Manual

 
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It is only recommended to follow the maintenance guide in the reference guide links listed above as they contain the same information mechanics and technicians use to service your bike. Important information contained in this page like special notes, tips, proper procedures, complete specifications, torque specs and recommendations must be followed in the reference links to ensure that the task is performed in the proper flow and to manufacture specification recommendations.

The following is a basic maintenance overview of critical points of service to maximize the performance of your motorcycle and help prevent premature part or parts failure.

Below is a list of topics usually covered in a Honda manual. Always service your motorcycle dirt-bike more frequently if the motorcycle is ridden in dusty areas, sand or snow.

Also service your bike more frequently if the motorcycle is ridden in very wet or muddy conditions. For a detailed checklist and maintenance schedule chart see download manual links above for complete intervals guide.

The 1989 honda cr250 service manual free download guide is for easy to understand with abbreviations to help identify which part gets cleaned, replaced, adjusted or lubricated and at what mileage interval it should be done at. 1989 honda cr250 service manual free download, to service your motorcycle more frequently if operated in sand, snow or muddy and wet conditions.

Perform the following pre-ride inspection daily, and when servicing the vehicle at each scheduled maintenance. Tires – check condition and pressures Fuel and oil tanks – fill both tanks to their proper level; Do not overfill oil tank All brakes – check operation includes auxiliary brake Throttle – check for free operation Engine stop switch – check for proper function Wheels – check for loose wheel nuts Air cleaner element – check for dirt or water; clean or windows 10 hd free download for Steering – check for free operation, noting any unusual looseness in any area Loose parts – visually inspect doanload for any damaged or loose nuts, bolts or fasteners 1989 honda cr250 service manual free download coolant – check for proper level at the recovery bottle.

Check fuel lines for signs of wear, deterioration, damage or leakage. Replace if necessary. Be sure fuel lines are routed properly and secured with cable ties. Replace all fuel lines every two years. Check fuel tank, oil tank, carburetor, battery and transmission vent lines for signs of wear, deterioration, damage or leakage.

Replace every two years. Be sure vent lines are routed properly and secured with cable ties. The fuel filter should be replaced in accordance with the Periodic Maintenance Chart.

The fuel filter is located between the fuel pump and carburetor. Shut off fuel supply at fuel valve. Remove line clamps at both ends of the filter. Remove fuel lines from filter. Install new filter servce clamps onto fuel lines hohda arrow pointed in direction of fuel flow. Install clamps on fuel line. Turn fuel valve ON. Start engine and inspect for leaks, refer to Harley manual for more information.

The carburetor float bowl should be drained periodically to remove moisture or sediment from the bowl, or before extended periods посетить страницу источник storage. Turn fuel valve to the off position. Place a clean container beneath downooad bowl drain spigot or bowl drain hose.

Turn drain screw out two turns and allow fuel in the float bowl and fuel line to drain completely. Inspect the drained 1989 honda cr250 service manual free download for 1989 honda cr250 service manual free download servicd sediment. Tighten drain screw. /17396.txt machine and check for leaks. NOTE : If there is a tube attached, it must be reattached as this will effect engine performance.

Inspect shift linkage tie rod ends, clevis and pivot bushings and replace if worn or damaged. Place gear selector in neutral.

Loosen rod end adjuster jam nuts on both ends of linkage rod. Turn linkage rod to shorten or lengthen rod until the shift lever is centered on hole in the fender. Hold rod end parallel to mounting surface and tighten jam nuts securely. Check for smooth throttle opening and closing in all handlebar positions. Throttle lever operation should be smooth and lever must return freely without binding. Place the gear selector in neutral. Set parking brake. Start the engine and let it idle. Turn handlebars from full right to full left.

If idle speed increases at any point in the turning range, inspect throttle cable routing and condition. Cd250 cable is routed properly and in good condition, repeat adjustment procedure.

Replace the throttle cable if worn, kinked, or damaged. If the choke knob does not stay out when pulled, adjust the choke tension by tightening the tensioner located under the rubber boot between the choke knob and nut. Firmly grasp 1989 honda cr250 service manual free download rubber boot and tighten until the choke slides freely but stays out when pulled. Verify free play of see reference manual links and smooth operation of choke cable.

If smooth choke operation is not obtainable, inspect choke cable for kinks or 1989 honda cr250 service manual free download bends нажмите чтобы перейти routing. The pilot systemsupplies fuel seevice engine operation with the throttle valve closed or slightly opened. Start engine and warm it up to operating temperature about 10 minutes. Turn pilot screw in clockwise until lightly seated.

Turn screw out the specified number of turns. Set idle speed to RPM. Always check throttle cable freeplay after adjusting idle speed and adjust if necessary. Slowly turn mixture screw clockwise using the pilot screw wrench until engine begins to miss. Slowly turn mixture screw counterclockwise until idle speed increases to maximum RPM. Continue turning counterclockwise until idle RPM begins to drop. Center the pilot screw between the points in Step 5 and 6. Re adjust idle speed if not within specification.

Start engine and warm it up thoroughly. Adjust idle speed by turning the idle adjustment screw in 1989 honda cr250 service manual free download to increase or out counterclockwise to decrease RPM. NOTE : Adjusting the idle speed affects throttle cable freeplay and electronic throttle control adjustment.

To remove the ETC cover: 1. Sdrvice a medium flat blade screwdriver and insert blade into the pockets of the cover starting on the 1 position. Twist screwdriver slightly while lifting on the cover to release snap. Repeat procedure at the other five locations as shown. NOTE : Do not attempt to remove cover until all latch points are released. Remove spark plug high tension lead.

Clean plug area so no dirt and debris can fall into engine when plug is removed. Remove spark plug. Inspect electrodes for wear and carbon buildup. Look for a sharp outer edge with no rounding or erosion of the electrodes. Clean with electrical contact cleaner or a glass bead manula plug cleaner only.

Measure gap with a wire gauge. Refer to specifications for proper spark plug type and gap. Adjust gap if necessary by bending 1989 honda cr250 service manual free download manuao 0electrode carefully. If necessary, replace spark plug with proper type. Apply a small amount of anti-seize compound to the spark plug threads. Install spark plug and torque to ft.

Refer to Electrical chapter for ignition timing procedure. It is recommended that dodnload air filter and pre filter be replaced /9325.txt. When riding in extremely dusty conditions, replacement is required more often.

The pre filter should be cleaned before hnda ride using the following procedure:. Lift up on the rear of the seat. Pull the seat back 1989 honda cr250 service manual free download free of the tabs. NOTE: When reinstalling seat, make sure the slots in the seat engage the tabs in the fuel tank. Remove clips from air box cover and remove cover.

Inspect the gasket. It should adhere tightly to the cover and eervice all the way around. Loosen clamp and 1989 honda cr250 service manual free download air filter assembly. Cleaning: 5. Slip the pre-filter element off of main element. Clean the pre filter with hot soapy water.

Rinse and dry thoroughly.