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Feb 11, 2007. Oddometer: 4. I have just aquired a 2001 XR400R relatively cheap. Im doing some long needed maintanance on her. I believe it needs the valves adjusted something serious, as its got some valve clatter. My question is this; To my understanding, the 400EX fourwheeler and the XR400 have the same motor (-electric start), so will these ...yeah you cant see the cam at all it just says set engine at tdc and adjust valves. thats what i was wondering about. ... i have a 2002 honda 400ex. changed the valve cover gasket and head gasket and bike will not start back. i have spark and getting fuel but will not fire up ...Helmut · #2 · Jun 7, 2011. Welcome to the forums. Yes, the valve clearance is the same. By the way, you can download the '05-'09 service manual from the manuals/schematics section of the forum. Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!! You only need two tools in life -- WD-40 and duct tape.ok lets start off by saying that i've NEVER had a quad kick my a$$ this bad haha. Just put in new crank on buddies 04 450r. all is good until start up time. wont start. did some searching and found to double check cam timing/valve adj etc etc. well that is all good. I also found to check...Experience the power and reliability of the Honda 400EX motor, powering one of Honda's most popular ATV models, the TRX400EX. With a displacement of 397cc and a top speed of 70mph, it's the perfect choice for ATV enthusiasts who crave excitement and adventure on rugged terrain.1999 honda 400ex bored 0.40over new timing chain. new pistion and rings. valve job 450r carb open airbox wk&n nerf bars, big gun full system pipe itp wheels, full belly skid plate fox shocks rear douglas beadlock rims..... 2005 450r hmf slip on durablue axle axis rear shock gt thunder front shocks nerfs dg front bumper. blingstar sprocket and ...In this video I will show you how to adjust the valves on a Briggs OHV engine. The valves need to be adjusted on these engines every year. When the valves g...I read in a post that the decompression thing on my 04 400ex. could cause it to knock. I have a bad knock at idle that seems to go away with r.p.m.'s. ... I'd start by adjusting your valves, but then again, they usually have more of a "tick" sound. 97WarriorRider. 07-29-2008, 03:56 PM. yes that "decompression thing can cause a knock/ticking. to ...Honda TRX 400EX & 400X ATV Info; Valve clearance; If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. ...cost of getting a valve job? so i found out today that my wifes 450r is gonna need new valves and it will need to be machined. the guy i took it to said he could send it out to his motor guy (reputable and does great work). he said he would get the valves and resurface it and do a mild port job while he was in there. at a cost of about $500.00 ...A quick explanation of how the Honda auto decompression mechanism functions. This camshaft is from an XR650L and this is a clip from my main XR650L tapping n...Advanced Machining Services Honda 400EX performance page. A vast array of OEM and aftermarket parts for your 400EX. Head kits, Cylinder kits, Engine kits, seats and guides replaced, cams, valves and spring kits, multi angle valve jobs, oversized valves installed, porting, big bore head mods., cylinder boring/honing, big bore kits.CJM · #2 · Aug 11, 2020. they all tend to tick, fairly normal. -2006 450R. 470 12.5:1, ported, 43mm carb, web cam, dasa, buncha other goodies. -2005 400EX 04/05 450R carb, stage 2 hotcam, HMF. -Do it right the first time, and you wont have a problem later. Being cheap or taking the easy way out only makes matters worse later.Jul 6, 2022 · Went to adjust my valves today, checked the intake clearance in multiple positions in case TDC was off, as I might have not been able to find it. My .005 feeler gauge wouldn't go in even when I backed the adjuster screw all the way out. I'm wondering why it's showing no clearance, I was gonna try the 1/6th method, but I backed both of the ... In my opinion, the Honda 400ex is one of the best all around sport atvs's every made. In this video we start going through the entire bike starting with the ...Find great deals on eBay for 400ex valve cap. Shop with confidence. ...Honda 400EX Engine Torque Specs from the '99-'05 Honda TRX 400EX service manual Maintenance spark plug -- 13 lbf-ft valve adjusting hole cap -- 11 lbf-ft valve adjusting lock nut -- 17 lbf-ft crankshaft hole cap -- 5.8 lbf-ft timing hole cap -- 7 lbf-ft engine oil drain bolt (crankcase) -- 18 lbf-ft Put the car in gear and apply slight load, (AC on) and set the Idle as you like it. Don't set it too high, as this will cause causes excessive clutch and brake wear. The Idle only needs to be 7 to 900 RPM with light load or AC on. Recheck timing and vacuum hook ups. Recheck mixture screw to lean best idle again.In this video I will show you how to adjust the valves on a Briggs OHV engine. The valves need to be adjusted on these engines every year. When the valves g...Next. TRX2fiveO Lifetime Premium · #2 · Feb 23, 2010. .004 Is what the 250X are and the 300EX is basically the same, pull the timing plug out rais and support the rearend I usually put mine in 3rd or 4th so I can bump the wheels around by grabbing one and turning it line up the line above the "T" and start adjusting. good luck. oh and when ...Spec is .15-.20. Subtracting .13 from .15 shows that the valve is out of spec by .02mm. Since the clearance is too low, we need a thinner shim in order to add clearance. Shims are available in increments of .05mm. We have a 185 (1.85mm) shim now, so a 180 (1.80mm) will add .05mm more clearance.Insert a feeler gauge between the rocker arm, and the sub-rocker arm [figure 10] Loosen the 10mm lock nut, and adjust the screw in or out until there is slight drag on the feeler gauge. Tighten the lock nut while holding the adjuster screw. After tightening the lock nut recheck the valve clearance to make sure the adjusting screw didn't move.Honda 400EX HP4 Valve Train Kit. $0.00 CALL FOR DETAILS/AVAILABILITY. Yamaha Raptor 250 HP4 Valve Train Kit. $0.00 ... Pro Flow Air Cleaner Kit Honda TRX 400EX. from $24.95 Yamaha Warrior Pro Flow Air Cleaner Kit . from $24.95 CALL FOR DETAILS/AVAILABILITY. HD 4-Stroke Valve Springs. $0.00Learn how to adjust the valves on a Honda TRX 400EX ATV using a feeler gauge. Tutorial covers intake valve clearance adjustment and exhaust valve adjustment....

KTM250EXC250 Discussion starter · #2 · Sep 24, 2012. I believe the part i need is the air cut off valve. The spring and other part came out when it broke. Correct me if im wrong.. but thats what i think it is. 2002 400ex. -K&N. -Yoshi Full Exhaust. -450r Timing chain. -Namura 11:1 Piston.View Full Version : 400ex timing, valve adjustment, and decompression clutch questions. 02CR500Rex. 09-16-2007, 07:41 PM. ... This was the first time I had ever attempted to adjust valves. Guess all that's left to do is remove the decompressor pin and the decompressor clutch from the cam, try to fix the timing, and adjust the valves once again. ...Honda ATV 400EX Valve Adjustment Instructions. -2006 450R. 470 12.5:1, ported, 43mm carb, web cam, dasa, buncha other goodies. -2005 400EX 04/05 450R carb, stage 2 hotcam, HMF. -Do it right the first time, and you wont have a problem later. Being cheap or taking the easy way out only makes matters worse later.Alright.. so since the day I bought my 400ex, it has had a noisy valve tick due to the hotcam inside it. I have tried everything to eliminate this tick... I went back to stock (.04in .05ex), i went to what was recommended by a few on various forums (.05in .06ex) and I went to what someone...

This video series was intended to be helpful. Valve adjustment on a 400ex.2004-2007 (514 pages) Offroad Vehicle Honda TRX400FA FourTrax AT Owner's Manual. (235 pages) Offroad Vehicle Honda TRX400EX 2008 Owner's Manual. (241 pages) Offroad Vehicle Honda TRX400FW Foreman 400 Owner's Manual. Fourtrax foreman 400 (165 pages) Offroad Vehicle Honda Fourtrax Foreman TRX400FW 1997 Owner's Manual.400ex decompression. 15138 Views 20 Replies 4 Participants Last post by Droopy's_PowersportsTN, Feb 6, 2021 Jump to Latest Honda400xRider Discussion starter ... Without that pin the machanism never locks in place and would be opening a valve slightly every revolution. I have seen many if them that people lost the pin and starting it was ...…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Adjusting Honda TRX400EX Intake Valve Clearance. Step 10. Check i. Possible cause: 400ex PROPER VALVE ADJUSTMENT (i know theres a sticky, but something was left out) H.