Crf450x repair manual

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Thanks a million! Thank you Cyclepedia. You guys are the best! Put the breather tube in the steering stem nut. The fuel line leading to the carburetor must be dis- crv. Install the fuel tank on the frame. Disconnect the crankcase breather tube. Loosen the screw on the air cleaner connecting tube 1. Loosely attach the upper and lower ends of the Subframe Removal clamp.

Remove the seat page Install the side covers, manjal cover bolts and collars. Tighten the screw on the air cleaner connecting tube 7. Install the muffler clamp by aligning the tab of the clamp.

Remove the left engine guard bolt and left engine guard. Install the engine oil filler cap. Recommended Transmission Oil 1. Run the engine for three minutes, then shut if off. Support the CRF in an upright position on a level without molybdenum additives 4-stroke oil, or an 1.

A ity ethylene glycol based anti-freeze containing corro- coolant loss of 0. Remove the fuel tank page Disconnect the spark plug cap. Remove the spark plug. If you want to check the igni- Coast to a stop, then remove and inspect the spark the same number of turns.

The porcelain insulator around the center elec- trode should appear tan or medium gray. Allow the air cleaner to dry thoroughly. After dry- ing, soak the air cleaner in clean Pro Honda Foam Filter Oil or an equivalent air cleaner oil. Apply air cleaner oil to the entire surface, inner and outer, and rub it with both hands to saturate the air cleaner with oil. The clutch springs have sky blue paint.

Coat the clutch plates with transmission oil. Install the six clutch springs and bolts. Install the six clutch discs which has yellow paint on Tighten the bolts in a crisscross pattern in 2 or 3 steps. Cylinder Head Cover Removal Remove the crankshaft hole cap. Remove the camshaft holder assembly bolts, camshaft Rotate the primary drive gear lock bolt crankshaft holder assembly, intake valve lifters and shims.

Then attach a piece of wire to the As you remove the camshaft holder assembly, the in- cam chain to prevent it from falling into the crankcase. Install the newly selected shims on the valve retainers. Install the cam shaft holder assembly onto the cylinder Insert the feeler gauge between the intake valve lifter Place the cam sprocket and align the timing mark on head with the intake cam lobes facing up as illustrated and cam lobe.

Measure the intake valve clearance and exhaust valve Measure the decompressor arm clearance by inserting Decompressor Arm Clearance Adjustment clearance. Spark Plug Installation Cylinder Head Cover Installation Insert the feeler gauge right exhaust valve clearance Install the spark plug by hand until finger tight, then Remove the spark plug hole packing from the cylinder 0.

Remove the engine hanger nut, engine hanger A bolt, sion stroke page Loosen the cylinder bolt. Remove the cam shaft holder assembly page Remove the dowel pins, cylinder head gasket and cam Piston Removal Cylinder Removal chain guide.

Place clean shop towels in the crankcase to keep rrepair Remove the cylinder bolt and cylinder. Apply engine oil to the piston rings and install the pis- We recommended you consult the Service Manual or ton rings.

Piston Installation Cylinder Installation Clean off any gasket reppair from the gasket surface Place clean shop towels in the crankcase to keep the of the crankcase, being careful not to let any material piston pin clips from falling into the crankcase.

Install the dowel pins and new cylinder head gasket. Route the cam chain though the cylinder. Route the cam chain through the cylinder head. Install the cylinder bolt and cylinder head bolts to the Install the cylinder head. Install a new exhaust pipe gasket, exhaust pipe re;air tighten the radiator hose clamp securely. Install the cylinder head cover page If any roughness or play is felt, refer to the Honda Service Manual for replacement or ad- justment procedures.

Reassemble the fuel filter in the reverse order of re- moval. Make sure the O-ring is in place. Check the fuel valve and fuel filter for contamina- The fuel filter is mounted on the bottom of the fuel tank. Install the fuel filter in the fuel tank. Check the manuzl for runout. Do not attempt to disassemble, disconnect or replacement. Rein- is probably air in the brake system and it must be bled.

Refer to the Honda Service Manual or see your autho- Tighten the screws.