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).
641 Answers ; SOURCE: accelator cale playing up on yamaha majesty 250. I know I wont be the one to fix it if there is an issue. The exhaust valves are at the front of the cylinder and the intake valves are at the back. Four valve covers are located on the front and back of the two cylinders; three are round and the left front cover is square. 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". Exhaust at 0.22mm Intake at 0.10mm.
Hi, [video] My SMAX has this rattle that sounds like it's valve slap but I'm not sure. Turn the rear wheel until the top of the piston is visible in the spark plug hole. Did mine at about 35,000 - again at 60,000. 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. Smax valves ARE very easy to check/adjust. Measurements are in thousandths of an inch. Remove both spark plugs with a socket wrench and spark plug socket. Clicking this will make more experts see the question and we will remind you when it gets answered. No need to remove the radiator etc.
To submit your questions or ideas, or to simply learn more about It Still Works, contact us. 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.
For example in the Magna forum you turn up over 400 when you search the same . Joined: Apr 12, 2019 Oddometer: 7 Location: … them put screw driver in … 0:00. 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. Print this page; Share this page × Ad. I'm curious what others will say, since I don't have an answer for you. General and technical discussion of the 85-Present Vmax. I tend to take longer rides, my last was a 275 mile ride in the country. So please take a moment to. Adjust the valves on the cylinder at the top of its compression stroke, which is the one with the closed exhaust valve. Adjust the valves on the cylinder at the top of its compression stroke, which is the one with the closed exhaust valve. 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. 07/15/15 4405 Smax oil changed and return the windscreen back to the bike.
New comments cannot be posted and votes cannot be cast, Press J to jump to the feed. FWIW I don't buy into the Yamaha recommended intervals....it's a suggestion not a guarantee. If it seems fine can you just change the oil or is skipping an adjustment a colossally dumb idea? If it is not flush, it needs to be adjusted. Remove the valve covers using a crescent wrench. I have an Nmax 155, if that adds any additional credibility. The MoM is saying to adjust them every 2000 miles. Tighten the lock nut and replace the cap.
Remount the four valve covers. Thanks Dman, 42k sounds better than 5k like on my Magna, it's more doable anyways knowing chances are it will be a one time investment in the valves. 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. V-Max Valve Adjustment? Any solutions? 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. The cam chain is now adjusted. 10/06/15 6045 Smax air filters are cleaned.
How often have you adjusted the valve on your Smax.
#3449. grandpoo, Apr 13, 2019 #3450. grandpoo n00b.
Place the motorcycle on its center stand. Bikes got a bit over 122,000 miles on it now. Nothing sounds all that amiss in the clips you've provided. While rotating the tire, the pin should move in and out an equal distance in both directions. 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. The clearance is correct when the next size up feeler gauge will not fit in between. The engine is now at top dead center. 0:00. Copyright 2020 Leaf Group Ltd. / Leaf Group Media. It will only rattle like this when the engine is fully warm. I've adjusted both exhaust and intake and the local yami dealer has adjusted it too. Comment; Flag; More. 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. Here's the sound of it when the engine's cold (18c for 6 hours)https://youtu.be/OLZA84e02VU. with no problems... Now watch it pop a valve on the way to Thunder! 10/20/15 6230 Oil Changed to the same stuff as above for belt and engine. 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. 1 Related Answer Keith Fox. Look into one of the spark plug holes using a flashlight. All were in spec, and nothing changed. Bring the other cylinder to the top of its compression stroke and repeat.
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. Popped in here to ask about my S-Max valves. Want Answer 0. I used to have a Honda Rebel almost 12000km when I sold it, never had to worry about valve. Loosen the lock nut with a wrench and turn the stud until the end is even with the end of the pin. I have no idea if the previous owner had the valves ever adjusted. I've had engines with more alarming noises that I've learned to live with as traits of the motor. Besides, it's often said that tappy valves are happy valves (adjusted correctly, thus closing completely, making a slight tick). Use a wrench (preferably a crescent wrench) to remove the cap located behind the cylinders, underneath the carburetors. My SMAX has this rattle that sounds like it's valve slap but I'm not sure. Insert a feeler gauge of the correct thickness between the rocker-arm bolt and the top of the valve stem. In the Owners Manual it says to adjust the Valves every 30,000 miles (42,000 km).
To me, it sounds kind of normal. Welcome to V4MuscleBike.com. I'd measure the valves to see if they were in spec.it's crazy easy to get to the valves on the SMAX. 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 wrong...so remember : job is easy, both to do and to botch. Yamaha SMAX Valve rattle. Inside the hole is a threaded stud with a lock nut on the end. Settings.
Exhaust at 0.22mm Intake at 0.10mm.
Shift the transmission into first gear. I could very well be wrong.
How to adjust the valves on a Yamaha Majesty - 2006 Yamaha Majesty 400. Play. Yamaha SMAX XC155 Valve rattle? My 2015 PC155 is at 4000 miles and I had everything adjusted 2000 miles ago. What does your dealer say? Thanks! It's loud enough that I can hear it in my helmet when the engine revs past 6k rpm. 02/18/16 8080 mile sevice. Small metric crescent wrenches (optional). To properly adjust the valves on the XS650, the cam chain must be adjusted prior to the valves. Whether you're looking for parts, technical advice or just want to hang out and chat, you've come to the right place. Send a private message to GuyFromTheNorth, http://www.vmaxforum.net/showthread.php?t=12853, http://www.vmaxforum.net/showthread.php?t=12855. This has been the case with my 50cc scooter as well as the 200cc ktm duke that i used to own. Spark Plug is changed (it didn't need it) and valve adjustment. 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. The XS650 valves can be adjusted on a cold engine, which eliminates the danger and difficulty of working on a hot engine. I am not mechanically inclined. To be honest, i think that sounds perfectly normal. Rotate the rear wheel forward. Press question mark to learn the rest of the keyboard shortcuts. Thank you. I've adjusted both exhaust and intake and the local yami dealer has adjusted it too. 1st & 2nd Gen Yamaha Vmax (1985-Present) V4MuscleBike.com > ... That doesn't sound like a valve adjustment, that sounds like an engine rebuild! It will only rattle like this when the engine is fully warm. Yeah guess I could show the max some love this winter. We have a very friendly and knowledgeable group here. Insert a feeler gauge of the correct thickness between the rocker-arm bolt and the top of the valve stem. Inside the stud is a small pin, which should be even with the end of the stud. The clearance is correct when the next size up feeler gauge will not fit in between. Can you post a video when it's not making the rattle ( when the engine is cold)? Fullscreen. Yamaha G2, G9 Valve adjustment Question, TDC Gas Yamaha. Posted by Anonymous on Jan 14, 2013. Is the valve easily visible and can it be checked without removing anything? 4 bolts remove the seat, 4 screws to the cover, and 5 bolts to the valve cover. Stop turning the tire when the pin is in the middle of its stroke.
Adjust using a crescent wrench by turning the bolt on the top of the rocker arm counterclockwise to tighten or clockwise to loosen. Yes, it has to be on the compression stroke.
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