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Yamaha G21A manual Maintenance, Spark Plug Inspection

Models: G21A

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MAINTENANCE

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2	B
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	Y-516
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	8-4

Spark Plug Inspection

You should periodically remove and inspect the spark plug. Dirty or worn spark plugs can cause poor perfor- mance.

åSpark plug ∫ Spark plug cap

1.Check for discoloration and heavy carbon deposits. The normal electrode color will be tan. If it is not, replace it.

2.Check the spark plug type, and check the spark plug gap with a feeler gauge.

Standard spark plug:

BPR2ES or BPR4ES

Spark plug gap:

0.028 ˜ 0.031 in (0.7 ˜ 0.8 mm)

åGap

3.Clean the gasket and plug sur- faces and install the spark plug fin- ger tight before tightening to the following torque:

Spark plug torque: 14.5 ft.lb

(20 Nm, 2.0 m.kg)

WARNING

When removing or installing the spark plug, be careful not to dam- age the insulator. A damaged insu- lator could allow external sparks, which could lead to explosion or fire.

UTILITY

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Yamaha G21A manual Maintenance, Spark Plug Inspection

Contents

UTILITY CAR G21AOWNER’S OPERATOR’S MANUAL LIT-19626-11-00LIT-CALIF-65-01 YAMAHALIT-CALIF-65-01 YAMAHAG21A OWNER’S/OPERATOR’S MANUAL 1st editionYamaha Motor Manufacturing IMPORTANT MANUAL INFORMATION CONTENTS LIMITED WARRANTY WARRANTYYAMAHA MOTOR CORPORATION, U.S.AWARRANTY 4 5 6EMISSION CONTROL WARRANTY YOUR WARRANTY RIGHTS AND OBLIGATIONSDURING THE PERIOD OF THIS WARRANTY WARRANTYSAFETY AND INSTRUCTION LABELS IMPORTANT LABELS1 2 3 4 5 IMPORTANT LABELSUTILITY CAR SERIAL NUMBER BEFORE OPERATING THE UTILITY CAR OPERATOR SAFETYWHILE OPERATING THE UTILITY CAROPERATOR SAFETY 1 2 3 4 5Avoid starting or stopping abruptly OPERATOR SAFETY LOADING/TOWING1 2 3 Preventative Maintenance. Per MAINTENANCE SAFETY PROGRAMParts and MaterialsMAINTENANCE SAFETY PROGRAM FUEL HANDLING STORAGE AND BATTERY CHARGING1 2 CONTROLS 1 2 3 4FEATURES MAIN SWITCH 2 3CONTROLS OIL WARNING LIGHTDRIVE SELECT LEVER CONTROLSACCELERATOR PEDAL BRAKE PEDALDo not drive the machine over a CONTROLSwalking speed of 5 km/h 3 mph while towingPRE-OPERATIONCHECKS PRE-OPERATION CHECKLISTSEAT PRE-OPERATIONCHECKS 1 2 3CARGO BED Lift the cargo bed for engine servicing4 5 6 7 PRE-OPERATIONCHECKSRefuel in a well-ventilatedarea Tighten the filler cap securely after refuelingENGINE OIL PRE-OPERATIONCHECKS1 2 3 4 Use care not to get oil on the starter beltPRE-OPERATIONCHECKS BATTERY1 2 3 4 5 TIRE CONDITIONSTEERING SYSTEM PRE-OPERATIONCHECKSBACK-UPBUZZER PEDAL OPERATIONParking Brake Pedal PRE-OPERATIONCHECKS5 6 7 8 Accelerator PedalSTARTING OPERATIONSTOPPING OPERATIONLOADING/TRAILER TOWING Secure loads to prevent shiftingMAINTENANCE PERIODIC MAINTENANCE CHARTS2 3 4 5 6 MAINTENANCE 1 2 3 4 5EVERY Acronym MAINTENANCESpark Plug Inspection MAINTENANCEMAINTENANCE Engine Oil Replacement1 2 3 4 5 6 Air Filter MAINTENANCEMAINTENANCE Do not wring out the foam pre-filter, this could cause it to tear MAINTENANCE 1 2 3 4 5Drive Belt Battery MAINTENANCEFuse Replacement MAINTENANCEGear Box Oil 8-10Wheel Replacement MAINTENANCEBrake Adjustment 1 2 3Brake Pedal Free Play Adjustment MAINTENANCETo adjust the brake pedal free play 8-12DRAINING FUEL STORAGE4 5 6 7 Refuel in a well-ventilatedareaSTORAGE BATTERY PREPARATION1ENGINE PREPARATION CHASSISGENERAL SPECIFICATIONS SPECIFICATIONS1 2 3 4 5 6 7 8 9 Items2 3 4 5 6 7 8 SPECIFICATIONSItems G21A1 2 3 4 5 6 7 8 9 SPECIFICATIONSItems G21AG21A WIRING DIAGRAM WIRINGLIT196261100 LIT19626110010/31/00 1PC - G21A O/M Yamaha Motor Corp., USA USA