2003 Johnson ST 55 HP WRL 2 Stroke Commercial Service Repair Manual, P/N 5005483, Page 109Get this manual

2003 Johnson ST 55 HP WRL 2 Stroke Commercial Service Repair Manual, P/N 5005483, Page 109

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FUEL SYSTEM PRIMER PUMP syringe to observe flow of alcoholSqueeze the syringe lightly to force alcohol through the hose
If there is no flow, replace primer pump housing
1 Outside diameter