Insert a feeler gauge of the correct thickness between the rocker-arm bolt and the top of the valve stem. Thanks! FWIW I don't buy into the Yamaha recommended's a suggestion not a guarantee. To properly adjust the valves on the XS650, the cam chain must be adjusted prior to the valves. Did mine at about 35,000 - again at 60,000. Can you post a video when it's not making the rattle ( when the engine is cold)? Measurements are in thousandths of an inch. Settings. I fell in love with the V4 cruiser style bike when I got this 83 Magna, but I'm struggling trying to find 30yr old parts for it as things break down. I tend to take longer rides, my last was a 275 mile ride in the country.

Comment; Flag; More. Adjust the valves on the cylinder at the top of its compression stroke, which is the one with the closed exhaust valve. It's loud enough that I can hear it in my helmet when the engine revs past 6k rpm. This has been covered in previous posts ...about 2 years ago... Then one guy here without enough mechanical experience screwed up his engine by doing it remember : job is easy, both to do and to botch. Remount the four valve covers. I could very well be wrong. We're an online community dedicated to owners and enthusiasts of V4 powered Muscle Bikes such as the Honda Magna, Sabre, Yamaha VMax and Suzuki Madura. If it is not flush, it needs to be adjusted. Inside the stud is a small pin, which should be even with the end of the stud. In the Owners Manual it says to adjust the Valves every 30,000 miles (42,000 km). So don't go telling the gys in the Magna forum but in the next year or two I'm hoping to pick up a 2000 or newer V-max. Exhaust at 0.22mm Intake at 0.10mm. Known for reliability and ease of maintenance, the XS650 lacked some of the style of its British counterparts but made up for it in performance. Nothing sounds all that amiss in the clips you've provided. To me, it sounds kind of normal. Hi, [video] My SMAX has this rattle that sounds like it's valve slap but I'm not sure. Press question mark to learn the rest of the keyboard shortcuts. Loosen the lock nut with a wrench and turn the stud until the end is even with the end of the pin. Popped in here to ask about my S-Max valves.

Play. Look into one of the spark plug holes using a flashlight. I've adjusted both exhaust and intake and the local yami dealer has adjusted it too. I'd measure the valves to see if they were in's crazy easy to get to the valves on the SMAX. Yes, it has to be on the compression stroke.

Smax valves ARE very easy to check/adjust. The clearance is correct when the next size up feeler gauge will not fit in between. It will only rattle like this when the engine is fully warm. Unless you really think it's worth pursuing, it's within spec, you know it is, don't let it rob you of your sanity. V-Max Valve Adjustment? I fell in love with the V4 cruiser style bike when I got this 83 Magna, but I'm struggling trying to find 30yr old parts for it as things break down. According to 650 Central, the valve clearance specifications for the Yamaha XS650 are: 1970 to 1972 models, intake valve .003, exhaust .006; 1973 to 1975 models, intake .003, exhaust .004; 1976 and 1977, intake .002, exhaust .006; 1978 models, intake .004, exhaust .006; and 1979 to 1983 models, intake .0024, exhaust .006. Adjust using a crescent wrench by turning the bolt on the top of the rocker arm counterclockwise to tighten or clockwise to loosen. We have a very friendly and knowledgeable group here. Posted by Anonymous on Jan 14, 2013.

The XS650 valves can be adjusted on a cold engine, which eliminates the danger and difficulty of working on a hot engine. Bikes got a bit over 122,000 miles on it now. 10/06/15 6045 Smax air filters are cleaned. Remove the valve covers using a crescent wrench. Remove both spark plugs with a socket wrench and spark plug socket. 1st & 2nd Gen Yamaha Vmax (1985-Present) > ... That doesn't sound like a valve adjustment, that sounds like an engine rebuild! 641 Answers ; SOURCE: accelator cale playing up on yamaha majesty 250. No need to remove the radiator etc. If it seems fine can you just change the oil or is skipping an adjustment a colossally dumb idea? Yeah guess I could show the max some love this winter. 10/20/15 6230 Oil Changed to the same stuff as above for belt and engine. I think the "issue" here is that modern stock exhausts are so silent that even the normal valve noise can be heard over the exhaust sound. The exhaust valves are at the front of the cylinder and the intake valves are at the back. Joined: Apr 12, 2019 Oddometer: 7 Location: …

I've had engines with more alarming noises that I've learned to live with as traits of the motor. Whether you're looking for parts, technical advice or just want to hang out and chat, you've come to the right place. Use a wrench (preferably a crescent wrench) to remove the cap located behind the cylinders, underneath the carburetors. General and technical discussion of the 85-Present Vmax. I tried searching this forum for more info on what's up with the V-max valve requirements but found 4 threads when I searched "valves". Yamaha G2, G9 Valve adjustment Question, TDC Gas Yamaha. Originally called the XS1 when introduced to North America in 1970, the Yamaha XS650 was a Japanese copy of British parallel twin-cylinder motorcycles such as the Triumph Bonneville and BSA Lightning.

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Thank you.

My 2015 PC155 is at 4000 miles and I had everything adjusted 2000 miles ago. To submit your questions or ideas, or to simply learn more about It Still Works, contact us. 1 Related Answer Keith Fox. Yamaha SMAX Valve rattle. I'm curious what others will say, since I don't have an answer for you.

Any solutions? 0:00. Besides, it's often said that tappy valves are happy valves (adjusted correctly, thus closing completely, making a slight tick). Welcome to The clearance is correct when the next size up feeler gauge will not fit in between. For example in the Magna forum you turn up over 400 when you search the same . 4 bolts remove the seat, 4 screws to the cover, and 5 bolts to the valve cover. While rotating the tire, the pin should move in and out an equal distance in both directions. How often have you adjusted the valve on your Smax. Bring the other cylinder to the top of its compression stroke and repeat. Insert a feeler gauge of the correct thickness between the rocker-arm bolt and the top of the valve stem.

#3449. grandpoo, Apr 13, 2019 #3450. grandpoo n00b. Tighten the lock nut and replace the cap. 02/18/16 8080 mile sevice. Turn the rear wheel until the top of the piston is visible in the spark plug hole. How to adjust the valves on a Yamaha Majesty - 2006 Yamaha Majesty 400. Exhaust at 0.22mm Intake at 0.10mm. Yamaha SMAX XC155 Valve rattle? 0:00. Inside the hole is a threaded stud with a lock nut on the end. The engine is now at top dead center. Clicking this will make more experts see the question and we will remind you when it gets answered. Spark Plug is changed (it didn't need it) and valve adjustment. This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. This has been the case with my 50cc scooter as well as the 200cc ktm duke that i used to own. What does your dealer say? Adjust the valves on the cylinder at the top of its compression stroke, which is the one with the closed exhaust valve. The MoM is saying to adjust them every 2000 miles. Four valve covers are located on the front and back of the two cylinders; three are round and the left front cover is square.

Shift the transmission into first gear. Here's the sound of it when the engine's cold (18c for 6 hours) Print this page; Share this page × Ad. Fullscreen. Is the valve easily visible and can it be checked without removing anything? Place the motorcycle on its center stand.

07/15/15 4405 Smax oil changed and return the windscreen back to the bike. I know I wont be the one to fix it if there is an issue. with no problems... Now watch it pop a valve on the way to Thunder! I decided to go thru my '85 XJ700X Maxim last winter, brakes, calipers, master...all the usual suspects and even tho it only had 15K on the clock I figured I'd at least check the valves (Yamaha recommended valve lash interval is 27,000 mi for that bike). Rotate the rear wheel forward.

I am not mechanically inclined. Turn the motor over by hand with your thumb over the spark plug hole, when you feel compression slipping past your thumb, is compression stroke. Stop turning the tire when the pin is in the middle of its stroke. I have an Nmax 155, if that adds any additional credibility.

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