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Section 10 FUEL SYSTEMSubsection 04 (CARBURETOR)F01K08A1CAUTION: Improper oil injection pump synchronizationwith carburetor can cause serious enginedamage.All Models except California ModelsLow Speed Screw Adjustment1. Must touch handlebar gripEnsure carburetor throttle plate(s) is (are) fully openat full throttle position. At this position, throttle leverstopper is almost in contact (0.5 mm (1/64 in))with carburetor body.NOTE: Apply a light pressure on the throttle plate(s),a slight play should be obtained.CAUTION: Improper cable adjustment will causestrain on cable and/or damage cable bracket orthrottle lever at handlebar.To adjust, loosen jam nut then turn adjustment nutas necessary.1F06F0GA1. Low speed screwCAUTION: Do not attempt to set engine idle speedwith low-speed screw.Tighten low speed screw until a slight resistanceis felt. Then, back it off to the specification as perfollowing chart.ENGINE TYPELOW SPEED SCREW717 1.0 ± 0.25 turnsF01G0YC 3 1 21. Adjustment nut2. Jam nut3. Throttle lever stopperTighten jam nut and recheck adjustment. WARNINGMake sure idle speed screw contacts stopperwhen throttle lever is fully released at handlebar.After throttle cable adjustment, always proceedwith the oil injection pump cable adjustment. Referto OIL INJECTION PUMP.NOTE: Turning screw clockwise leans mixture andturning screw counterclockwise enriches mixture.Start and warm up engine.CAUTION: If watercraft is out of water, enginemust be cooled using the flush kit.Check that engine idles and runs smoothly. Makesure engine reacts quickly to throttle lever depression.If necessary, readjust low speed screw(± 1/4 turn).High Speed ScrewThe high speed screw no. 14 is sealed with a plasticcap that allows an adjustment of 1/4 turn.NOTE: Turning screw 1/4 turn counterclockwise enrichesmixture and turning screw clockwise leansmixture.CAUTION: Do not attempt to adjust high speedscrew by removing plastic cap.10-04-8 SMR2003-032_10_04A.FM
Section 10Subsection 04FUEL SYSTEM(CARBURETOR)Fuel Accelerator PumpAll EnginesEnsure throttle cable and idle speed are properlyadjusted.With the engine not running, loosen adjustmentscrew lock nut. Use a feeler gauge between levertab and pump plunger. Turn adjustment screw toachieve approximately 0.05 - 0.15 mm (.002 - .005 in)gap. Tighten adjustment screw lock nut.1F06F0IA 11. High speed screwIdle Speed ScrewTurning screw no. 15 clockwise increases engineidle speed and turning screw counterclockwise decreasesengine idle speed.1F02F1QA2TYPICAL1. Adjustment screw2. Small gapNOTE: Turning the adjustment screw clockwise willincrease the gap.Choke CableEnsure choke lever has a free-play of 0.5 to 2.0 mm(1/64 to 5/64 in).F01G0YD1. Idle speed screwConnect an induction-type tachometer (P/N 529014 500) on spark plug cable of magneto side tomeasure engine speed.NOTE: To adjust idle speed, ensure flame arresterand air intake silencer are installed.Start engine and bring to normal operating temperature.CAUTION: If watercraft is out of water, enginemust be cooled using the flush kit.Turn screw so that engine idles at 1500 RPM inwater or 3000 RPM out of water.F07F02ATYPICAL1. Choke leverA. Free play of 0.5 to 2.0 mm (1/64 to 5/64 in)To adjust, loosen jam nut on carburetor bracket,then turn adjustment nut as necessary.Tighten jam nut and recheck adjustment.A1SMR2003-032_10_04A.FM 10-04-9
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