Cylinder head eng

F-5

CYLINDER HEAD ENG

CYLINDER HEAD REMOVAL

b 1. Align:

• Mark “T” §a on the rotor

a (with stationary pointer §b on the crankcase

cover)

NOTE:

Turn the steering clockwise with a wrench and align the “T” mark with the cylinder head match mark when the piston is at TDC on the compression stroke.

2. Loosen

• Bolt Ø

3. Remove

1 • Timing chain tension assembly

• Timing chain tension gasket

4. Remove

2 • Cam sprocket Ø (Support rotor)

Rotor holding tool: 90890-01235

2. Check:

• Cylinder head

Repair if scratched or damaged

3. Measure:

• Cylinder head warping

If it does not conform to specification, resurface it

Cylinder head warping: less than 0.03mm

************************************************************ Procedure for measuring and resurfacing war- ping:

Place a straightedge and a feeler gauge across the cylinder head

Measure the warping

If the warping is beyond the specified limits, resurface the cylinder head

Place a 400-600grit wet abrasive paper on the surfa- ce plate, and resurface the head using a figure-eight sanding pattern.

NOTE:

Fasten a safety wire to the timing chain to prevent it from falling into the crankcase

5. Remove:

• Cylinder head

NOTE:

Rotate the cylinder head several times for an even resurfacing

NOTE:

Loosen the nuts in a criss-cross fashion 1

Start by loosening each nut —(turn until all are loose

Дата добавления: 2014-12-23