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4
5
5
4
3
2
6
7
Workshop Manual KD 441_cod. 1.5302.865_2
A
1
6
7
8
nd
ed_ rev. 01.
Hold the grip and firmly pull out the rope to start.
Rocker arm cover
Loosen fastening screws A and remove the rocker arm cover.
Rocker arm cover breather system
The crankcase breather system is located inside the rocker arm cover
1. Check that diaphragm 2 is intact ; wash with Diesel oil and blow
through the small mesh element 4 with compressed air.
When reassembling fix box 3 with Loctite " Form-a- gasket No. 6"
and screw plate 5.
To assemble decompression lever 7, insert spring 6 (positioned as in
figure) on the lever pin, considering that the spring clip should be in-
serted in hole 8.
Rocker arm cover - Breather recirculation
Caution – Warning
Always check the the spring 3 and valve 2 to make sure they are
in a good conditions.
Crankcase vapor recirculation occurs through duct 4.
If the air filter clogs, the increased intake vacuum could suck oil throu-
gh duct 4 into the combustion chamber, causing the engine to ope-
rate at a runaway rate. This is prevented by valcuum valve 2 which,
when the vacuum increases, overcomes the resistance of spring 3
and shuts the duct 4.
Make sure that oil plug 5 is correctly closed.
Refit cover 1 and tighten rocker arm cover to 10 Nm.
4
Disassembly
- 19 -
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