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- Visually inspect the old coolant. If whitish cotton-like wafts are<br />
observed, aluminum parts in the cooling system are corroded. If the<br />
coolant is brown, iron or steel parts are rusting. In either case, flush<br />
the cooling system.<br />
- Check the cooling system for damage, loose joints, or leaks.<br />
- Install the water pump cover drain plug and cylinder drain plug with<br />
the specified torques shown in the table. Always replace the gasket<br />
with a new one, if it damaged.<br />
Drain Plug Tightening Torque<br />
Water Pump Cover Plug: 9 Nm. (6FT.LBS).<br />
- Fill the radiator up to the bottom of the radiator filler neck<br />
with coolant, and install the radiator cap.<br />
- Check the cooling system for leaks.<br />
- Start the engine, warm up the engine throughly, then stop the<br />
engine.<br />
- Check the coolant level after the engine cools down. Add<br />
coolant up to the bottom of the radiator filler neck.<br />
SPARK PLUG<br />
The standard spark plug is a shown in the table, it should have a<br />
specified gap, and be tightened to 27 N-m. (20FT.LBS).<br />
Standard Spark Plug<br />
NGK CR8 E 0.7-0.8 mm.<br />
The spark plug should be taken out periodically to check its gap<br />
and ceramic insulator. If the plug is oily or has carbon build up on<br />
EC FSE 2003 -21-<br />
it, clean it (preferably with a (sandblaster) and then clean off any<br />
abrasive particles. The plug may also be cleaned using a high flashpoint<br />
solvent and a wire brush or other suitable tool. Measure the<br />
gap with a wire-type thickness gauge, and adjust the gap, if incorrect,<br />
by bending the outer electrode. If the spark plug electrodes are<br />
corroded or damaged, or if insulator is cracked, replace the plug.<br />
NOTE<br />
Inspect every 30 hours. Replace every 60 hours.<br />
To find out whether the right temperature plug is being used, pull it<br />
out and examine the ceramic insulator around the center electrode.<br />
If the ceramic is light brown, the spark plug is correctly matched to<br />
engine temperature. If the ceramic is burned whit, the plug should<br />
be replaced with the next colder plug. If the ceramic is black, the<br />
plug should be replaced with the next hotter plug.<br />
NOTE<br />
If the engine output decreases, replace the spark plug to regain<br />
performance.<br />
Spark Plug maintenance<br />
NGK<br />
CR7E<br />
CR8E<br />
CR9E<br />
DENSO<br />
U22ESR-N<br />
U24ESR-N<br />
U27ESR-N<br />
COMMENTS<br />
If the standard plug looks<br />
wet or has a dark color,<br />
replace.<br />
Standar<br />
If the standard plug looks<br />
glassy or has a white color,<br />
replace the plug.
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