VanguardTM Twin-Cylinder OHV Liquid-Cooled Engine Section 1 - General Information
bore to wear quickly. As the rings and cylinder bore become worn, these abrasive particles enter the crankcase and contaminate the oil, forming an abrasive mixture which will cause wear on all of the internal moving parts. Clean cartridge every 100 hours. To clean cartridge, gently tap on end with handle of screwdriver. Replace cartridge every 600 hours. Clean and replace more often under dusty conditions. Replace if very dirty or any damage occurs to cartridge.
REPLACE SPARK PLUG Replace spark plugs every year. Replace spark plugs if electrodes are burned away, or the porcelain is cracked. Set spark plug gap at .020” (.51 mm). Torque spark plugs to 180 in. lbs. (20.0 Nm). B&S to Champion* Plug Type
B&S
Champion*
NOTE: Do not use pressurized air or solvents to
Resistor Plug
491055
RC12YC
clean cartridge. Pressurized air can damage cartridge; solvents will dissolve cartridge.
Resistor Plug
496018
RC14YC
* 1. Unlock clamps 2. Remove cartridge
and remove cover
.
Champion and the Bow Tie are trademarks of Federal-Mogul Ignition Co. Used under license.
from air cleaner body.
3. Carefully clean out air cleaner cover.
NOTE: Do not blast clean spark plugs. Spark
4. Install cartridge in body.
plugs should be cleaned by scraping or hand wire brushing and washing in a commercial solvent.
5. Install cover and lock clamps with rubber valve down.
Fig.5 Fig. 6
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