3. INSPECTION/ADJUSTMENT STRYKER 125/150 POWER DRIVE SYSTEM DRIVE CHAIN Check the drive chain slack. Specified Slack: 12cm Drive Chain Adjustment: 1. First loosen the rear axle nut. 2. Adjust the right and left chain adjuster to align the right and left index marks with the punch marks on the chain adjusters. 3. Turn the rear wheel to see if the drive chain slack is within the specified range. 4. Tighten the rear axle nut. After drive chain adjustment, check the rear brake pedal free play and adjust if necessary. ELECTRICAL EQUIPMENT Spark Plug SPARK PLUG Remove the spark plug cap and spark plug. Check the spark plug for wear, fouling and carbon deposits. Remove the fouling and carbon deposits with a spark plug cleaner or wire brush. Specified Spark Plug: DR8EA 0.60.7mm Gap, Wear and Fouling Deposits Spark Plug Gap: 0.60.7mm Washer Damage Cracks 3-7