Valve Clearance; Checking; Adjusting - BRP Johnson J30TEL4SUA 2007 Service Manual

MAINTENANCE

VALVE CLEARANCE

VALVE CLEARANCE

Checking

IMPORTANT:
The engine must be cold when
checking the valve clearance.
Remove the engine side covers. Refer to
"ENGINE SIDE COVERS" on page 54.
Remove the manual starter or flywheel cover, and
the cylinder head cover. Refer to the POWER-
HEAD section.
CAUTION
Rotate the crankshaft clockwise to prevent
damage to the water pump impeller.
Rotate the crankshaft clockwise until the No. 1
piston is at TDC on its compression stroke.
Measure the valve clearances for the No. 1 cylin-
der by inserting a thickness gauge between the
valve stem end and the valve adjusting screw on
the rocker arm. For both intake and exhaust
valves, the valve clearance should be
(
0.007 in. 0.13 to 0.17 mm
If any valve is out of specification, adjust the valve
clearance.
1. Valve
Rotate the crankshaft clockwise and repeat the
procedure for the other two cylinders in turn.
68
0.005 to
).
001327

Adjusting

Loosen the locknut. Use a screwdriver to turn the
valve adjusting screw to bring valve clearance to
within the specification.
Hold the adjusting screw in place and tighten the
locknut to a torque of 97 in. lbs. (11 N·m).
Check the valve clearance again.
1
2
4
3
1. Valve adjusting screw
2. Locknut
3. Valve stem
4. Valve clearance
1
001326