Part IV Wiring Diagram
31
Make sure that the contact width of valve seat completed is within specified range.
Standard
Maintenance limit
0.85mm
2.0mm
e) Slightly grind by 45° grinder to remove any burr
on the edge of valve seat.
f) After reshaping the valve seat, check the width
of valve seat. Use only the colorant on valve cone
face, insert the valve and press the valve several
times with effort, but ensure that the valve does
not rotate on the valve seat. If the valve seat cone
face is evenly stained with colorant, as shown in
the figure, it means that the valve is in good
contact with the valve seat cone face.
g) Apply abrasive to valve seat cone surface, and
rotate valve grinding tool to grind the valve seat.
h) Check valve clearance after assembly.
3-4-6 Muffler
The muffler will get heat. Please keep this gasoline engine out of reach of passersby and children.
·
During the operation of the gasoline engine, any combustible goods shall not be placed near the exhaust
port.
After removing the muffler, knock it with a clinker hammer for decarburization.
Don't clean it with iron wire, or the sound proofing material might fall off, which will reduce the silencing
performance.
The muffler sealing gasket can't be reused.
Valve
grinding tool
