1978 Johnson 175, 200, 235 HP Outboard Service Manual, Page 33Get this manual
light pressure to tabs on brass adjusters to take up backlashTighten screwsbLoosen choke rod fastener lock screwsSee Figure 3-32Hold center carburetor choke closedPush up on pointto close upper chokeTighten upper lock screwWhile holding center choke closed, push down on point to close lower chokeTightenlower lock screwBe sure all chokes operate freely Figure 3-30Six Air Silencer Base Screws
1Upper carburetor lever adjustment screw 2Lower carburetor lever adjustment screw 3Cam follower 4Space between roller and cam 5Throttle cam 6Choke rod lock screws
Figure 3-32Synchronizing Throttle and Choke Valves
CHOKE SOLENOID ADJUSTMENT aLoosen solenoid clamp screwsSee Figure 3-33Figure 3-31Air Silencer Cover Screws and Lockwashers bHold plunger against the bottom of the solenOid by pressing on the exposed tip with pOinted tool that will not interfere with the solenoid linkWhile continuing to hold the plunger, slide the solenoid assembly and solenoid clamp aft until both choke valves are fully closed and all slack is removed from the linkage between the plunger and choke levercScribe pencil line on the solenoid assembly at the forward edge of the solenoid clampContinuing to hold the solenoid clamp in the aft pOSition, move the solenoid assembly aft .016 inch (.41 mm) until the pencil line is just covered by the solenoid clampTighten the solenoid clamp screws3-13