1978 Johnson 175, 200, 235 HP Outboard Service Repair Manual P/N JM-7810, Page 175Get this manual

1978 Johnson 175, 200, 235 HP Outboard Service Repair Manual P/N JM-7810, Page 175

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WATER (See Figure 9-5)
1 Impact letdown valve 2 Reservoir Filter valve 4 Letdown control piston

Figure 9-5

to Water After Impact