Montesa

Following a request that my friend Enrique made to me in the La Maneta forum, I decided to write a small guide to help those who do not know how the amazing “Montesa parts manuals” work, which make life easier for everyone who uses them. Above all, if we understand them as they were conceived in the factory. Even today I am amazed by the mentality of Pedro Permanyer, at a time when we were far from the rising of computer science in our lives. The system can’t be more logical. The first thing we should know is that, from the Impala, all Montesa parts have a unique reference formed by three groups of numbers (and sometimes a fourth group). These groups were separated…

Can anybody tell how to stop my 4rt 260 clutch dragging

Anyone knows consequences of the fire please? I consider buying used 2023 4ride from a buddy but now doubt Honda is going to rebuild the factory. Main question for me is availability of the engine parts in the future. Any advice on this regard is welcomed)

There is some kind of white residue primarily on the front wheel of my 2018. It looks sort of like mineral deposits from where water dried. Detergent, Isopropyl alcohol and acetone do not remove it. A carnauba cleaner wax removes some but is way too much work for old hands. The rag with cleaner turns black so maybe it is some kind of oxidation. Is there an easy way to remove it?

Morning, I’m looking for some help with my Montesa 301 RR 2022 clutch. I’ve had issues with the clutch since purchase a year ago. It’s progressively got worse with juddering, shrieking when hot and now a grinding sound under engine breaking. Ive changed the plates out for Mitani Alluminium discs, fresh HTX 740 and it hasn’t improved or changed at all. Any advice would be much appreciated.

Looking for crankshaft specs for spacing and truing. Would like to find service manual. Appreciate any leads.

Hi, I’ve got a 2016 300rr when riding around under load or slight throttle I get some weird noises from the left side of the engine (sounds like a bag of ball bearings) soon as the clutch lever is pulled in it stops, release the lever and it starts again, any help is appreciated

Hey. Sure this has been asked before. 260 vs 301 for novice rider? Im 3 months into trials and the beta 300 i bought is a real handful. A mate wanted it off me, so got my money back on it. I ride most weekends but just havnt hit it off with the beta. Ive been riding bikes for years, im just new to trials. I've always had 4 strokes in whatever sport ive ridden in and id like to try a 4rt before I have to buy another 2t. Cheers

I have a 2015 4RT that I bought used in 2020. I've never had an issue with this bike, but it recently sat in my garage for about 6 months without being ran. It ran fine when last put away. I replaced the fuel with fresh non-ethanol fuel and tried to start it with no luck. It will start and run when spraying starting fluid down the air boot, so to me that points to a fuel issue. I unplugged the fuel pump connector from the bottom of the tank and connected 12v to it. Nothing happened. No pump sounds. No fuel out the disconnected fuel line. Is there something that would cause the fuel pump not to pump when directly connected to 12v power, other than a completely dead pump? I…

help required to identify my new purchase to hopefully obtain proof of manufacture date to enable registration for road use for dvla, bike was bought as a cota 200 but having doubts now as may be a mh200, it came with a white tank and cota 200 decals but has a montesa honda vin plate rivitted on front of steering stock and also a stamped number on side of steering stock both numbers are the same and start as MH200 prefix, the engine number has the same last three digits as the frame number but starts with 29H so numbers appear to be matching, however the 29H is puzzling as sources suggest 29M should be the prefix, the frame has the engine protection loops and the carb is…

Hi all! I just joined recently to see if anyone might have a potential solution to my problems with my Montesa Cota 172… hopefully I’m in the right place. The bike has been in my family since new, my older brother was the last to use it 20 odd years ago. I got it with the intent to get her running, here’s a list of what I’ve tried to do to get it going; 1.Replaced crank seals 2.Checked spark (bright blue and consistent with a brand new spark plug, verified coil is working correctly) 2.Verified timing (hasn’t changed since new) 3.Rebuilt the Amal 620 carburetor (tickler works as intended now) 4.Cylinder leakdown test passed I’…

Hi I could do with some advice please on how to remove the steering stem from the bottom yoke.348 mont. Thanks Martyn

Has anyone tried a 260 head pipe on a 300. It looks a good bit smaller and I wonder if it would soften the response. I would like my 300 4RT to run more like a Beta 300.

Did anyone tried an upgraded injector in a montesa? Banyeras is selling en injector that should be better, does this just replace the stock injector or does the bike needs remapping to get the best out of it ? Kind regards Bob

Just bought 2021 4RT 260 which is somehow messy and I start servicing it and got shocked 🤣 Im used to simple 2 stroke, and I couldn't believe all the hoses and wires running under the tank! what a mess! On the wiring side, I want to leave the bare minimum. I dont need lights and horn. I just want kiill switch and what ever the engine need (ECU, Fuel pump, fan). Any advice here? On the hoses side, that double fuel tank vent left me confused. What the lower one is good for? Can I remove/block it or it will have some unwanted effects doing so? The head vent goes into big catch tank. Is it ok to remove it and just route the hose into the ground? …

Amazing bike in amazing conditions.

I had the clutch cover off and am struggling to understand how the clutch actuator works. Every bike I remember controls the bike from the opposite side of the engine. A rod goes through and pushes the pressure plate out to create clearance and release the clutch. On this bike, the slave cylinder pushes in the opposite direction. So, is the movable pressure plate on the back side of the clutch pack when compared to other bikes? The parts list looks like that.

How much do these links raise the bike? Does it provide a softer ride? The H&D description is hard to interpret. I'm not a trick rider but would like something more compliant so easier on an old body. The Montesa rear suspension also feels quite dead compared to my Beta 4T. "uprates the soft rear end and aids the ability to 'trick' ride and hop around the rear end by providing an even more progressive shock."

Has anyone fitted heated grips to a 4ride (or a 4RT assuming they are the same) ? Splat shop do some sticky back heated elements that you then slip normal grips over the top, it says they consume 36W, will my 4 ride have enough power to drive them? And where am i best tapping into the wiring loom to take the feed?

Just thought I'd share a few photos of my 349. Just needs a couple of tweaks to get the gear change sorted and rear brake adjustment. Then get it registered. It's only taken 15 or so years!