Need instructions for setting valves on Johnson (Suzuki) 140 four stroke

[aero320]

Purchased a new Johnson 140 four stroke last spring and have good results. Changed oil today as well as lower unit lubricant. Need to adjust valves. Local dealers around here are very little help and it seems that the service manuals are not yet available for this engine. I used to set the valves on my Mazda GLC back in the 80's. I would like to know what to expect before taking anything apart.

 

[clanton]

Re: Need instructions for setting valves on Johnson (Suzuki) 140 four stroke

Dealer should be able to order you a manual. I will look for manual tomorrow.

 

[backdraft]

Re: Need instructions for setting valves on Johnson (Suzuki) 140 four stroke

Aero, just a little information for myself. Does that motor have conventional adjustable rocker arms, or does it have the tiny pucks or discs that have to be replaced by removing the cams? If it's the latter, unless you are especially talented, I would have the dealer to it. That puck system is used on motorcycles that I use to ride. I have done it and it's a lot of carefully done work. nevjb

 

[aero320]

Re: Need instructions for setting valves on Johnson (Suzuki) 140 four stroke

I haven't taken the cover off yet to see how the adjustment is made. The dealers around here sell 2 stroke engines, I know as much about it as they do. I had to have the engine special ordered.

 

[backdraft]

Re: Need instructions for setting valves on Johnson (Suzuki) 140 four stroke

Aero, the reason the dealer is not enthused about doing it is probably the lack of an experienced mechanic that has done the job. It's quite complicated and if you get the timing off , because you have to undo the timing chain and lift the cams, it's a job for the skilled. Thats IF it has the disc type adjusters. nevjb

 

[jegervais]

Re: Need instructions for setting valves on Johnson (Suzuki) 140 four stroke

The 140 Johnson uses the "shim & bucket" (little pucks).<br /><br />However, they have two special tools p/n 5034226 & p/n 351172, which if used do not require removal of the timing chain or any of the cam shaft retainers. I used it in 4-stroke school last year & it works really sweet! It cuts down on the labor time too...<br /><br />Any JohnnyRude dealer can order you the service manual under p/n 5005467. The service manuals are available and have been available since November of 2002 - I got mine in December 2002.<br /><br />-John

 

[backdraft]

Re: Need instructions for setting valves on Johnson (Suzuki) 140 four stroke

John, does that tool hold down the edge of the bucket by rotating the cam so you can change the puck? nevjb

 

[Lou C]

Re: Need instructions for setting valves on Johnson (Suzuki) 140 four stroke

I had 2 Toyotas with the shim and bucket adjusting method. My experience with them is that they stay in adjustment for a LONG time, and most Toy dealers don't even check them, much less do the adjustment. You need the tools to depress the lifter and remove the shim if necessary. Basically you have to measure the valve clearance, if it in spec, OK, if not you have to remove and measure the shim that is in there (with a micrometer) and then figure out the thickness of the shim you need to make the clearance right. Then you have to go and buy the correct shim and install it. I'd get the factory shop manual and read through the procedure. I would check them but you may find nothing needs to be adjusted. My 89 Corolla GTS with 100K miles on it (much of them high RPM miles) was in perfect adjustment when I checked it after 9 years of driving.

 

[jegervais]

Re: Need instructions for setting valves on Johnson (Suzuki) 140 four stroke

One tool resembles a pair of pliers, less any gripping teeth. It has one curved jaw, which slips between the cam shaft and the top of the shim. When you squeeze the handle, it depresses the "bucket". Then you slip the other tool between the edge of the bucket and the cam shaft. This holds the bucket down. Next you would use a small magnetic pick up to remove the shim. <br /><br />BTW, although the majority of valves seldom need adjustment, that is not always true. The first 115 four stroke I checked at its 20 hour service, had 3 valves out of adjustment. Once valve lash is correctly set, in my experience I have found that 500 hours seems to be the time frame that they need adjustment again.<br /><br />Keep in mind, that although there are many similarities to the automotive versions of these engines, the typical car cruises around 2000 rpm's and the typical outboard can cruise between 3500 to 6000 rpm's all day long. You will discover that the outboard needs more frequent adjustment than your car or truck.<br /><br />-John

 

[aero320]

Re: Need instructions for setting valves on Johnson (Suzuki) 140 four stroke

Thanks for the information John from Illinois. I called Clark Marine today and ordered the shop manual and both tools. Should be here next week. I plan on keeping this engine for the long haul and don't mind investing in tools to keep it serviced. I had two dealers (not Clark) tell me the manuals were not available yet. Funny, the numbers you supplied seemed to be OK. Guess the other dealers figured they would stick me for shopwork.