the ‘T’ mark (5) on the flywheel coincides
with the index mark (6) on the left
crankcase cover. In this position the piston
will either be on the compression or exhaust
stroke. The adjustment must be made when
the piston is at Top Dead Center and both
the inlet and exhaust valves are closed. This
condition can be determined by moving the
rocker arms. If they are free, it is an
indication that the valves are closed and the
piston is in compression stroke. If they are
tight, the valves are open, rotate the cam
O
sprocket (7) 360 clockwise and re-align
the 'T' mark with the index mark.
Intake: 0.10 mm Exhaust: 0.10 mm
Standard clearance (cold condition)
î
Check the clearance by inserting the feeler
gauge (9) between the adjusting screw
(10) and valve stem.
(4) Timing hole cap (5) 'T' mark (6) Index mark
(7) Cam sprocket (8) Special tool
4
6
5
7
8
î
Adjust by loosening the lock nut (11) and
turning the adjusting screw until there is a
slight drag on the feeler gauge. After
tightening the lock nut, check again the
clearance.
î
Install all parts in the reverse order of
disassembly.
10
9
11
Before inserting the feeler gauge, smear a bit
of engine oil
on the feeler gauge
to avoid
damage to the feeler gauge.
NOTE
specific requirement of tuning due to engine
The carburetor is factory preset in order to
achieve optimum performance and meet
emission standards. However in case of
CARBURETOR (IDLE SPEED)/
THROTTLE CONTROLLED IGNITION
SYSTEM (TCIS)
(9) Feeler gauge (10) Adjusting screw
(11) Lock nut
34
Summary of Contents for HF-Deluxe
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