REPLACE SPARK PLUG

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.

NOTE: Do not use pressurized air or solvents to clean cartridge. Pressurized air can damage cartridge; solvents will dissolve cartridge.

1. Unlock clamps and remove cover . 2. Remove cartridge from air cleaner body. 3. Carefully clean out air cleaner cover. 4. Install cartridge in body. 5. Install cover and lock clamps with rubber valve down.

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).

NOTE: Do not blast clean spark plugs. Spark plugs should be cleaned by scraping or hand wire brushing and washing in a commercial solvent.

B&S to Champion*

Plug Type B&S Champion*

Resistor Plug 491055 RC12YC

Resistor Plug 496018 RC14YC

Champion and the Bow Tie are trademarks of Federal-Mogul Ignition Co. Used under license.

Fig.5

Fig. 6

VanguardTM Twin-Cylinder OHV Liquid-Cooled Engine Section 1 - General Information