About half way out the cord will abruptly stop and jerk me forward. Unless I go at certain angle upwards, I can get it to fully extend and start. Anyone know why?
: Insert feeler gauge
4180 893 6400 (1) between
rocker arm and valve stem.
The feeler gauge must slip through
with a certain resistance.
Inlet valve (2) = 0.10 ± 0.02 mm
452RA082 VA
2
1 3
Exhaust valve (3) = 0.10 ± 0.02 mm
Adjusting valves
Valve clearance is adjusted with the
locknuts (arrows).
To increase valve clearance:
Loosen the nut.
452RA083 VA
To reduce valve clearance:
Tighten the nut.
– Turn engine over several times,
check valve clearance again and
adjust if necessary.
Assemble all parts in the reverse
sequence.
– Thoroughly clean the sealing
faces on the cylinder and cover.
Fit a new gasket
And you will either have to get the Stihl feeler gauges or grind down some to about 3mm wide to fit under the rockers.
Either Stihl or husqvarba ( or both ) do a kit with adjusting spannars & feeler gauges,
