Dirt Bike FAQ

Hi Sk8,,,
I'm going to make a guess and assume it's a Chinese Clone of a little Honda engine.

Normally,,all those type motors are very easy to start if the engine is in Good Condition,,,or even fair condition.
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Some things that can make them hard to start.

*Low Compression.
That can be caused by several things.
You Really need to have the compression checked with a gauge to determine if it's within proper range.
Should be about 120 psi minimum.

If it's Less than that,nothing will really help much.

"Low Compression" is usually thought to mean "burned-up / wore out Engine",,,,and that's often true.
But not Necessarily.

Valve Clearance Adjustment,,and Timing Chain condition will affect it also and make the compression a bit lower.

>>>Adjust the Valves to .003"
That's Looser than recommended setting of .002".

>>>Make sure the cam chain is adjusted right.
Sometimes the adjuster "sticks" and doesnt really work right.
Also need to check the chain for wear.
Both things are easy to do.

CARBURETOR:
These things are so small even the Tiniest amount of gum/varnish/deposits will make them behave badly.
Easiest thing to do is try some Cleaner added to the Fuel tank.
Use FUEL INJECTION cleaner,,,not "carb cleaner"—it works much better.
Chevron Techron ,,or Seafoam are 2 good ones.
Don't Overdose it thinking that "more is Better".

You may ultimately have to remove the carb and take it apart to clean it.

The Intake Manifold "never" gets loose on original,genuine Hondas.
On all the Clones,,,,it's a crapshoot.
If they Do get loose the Gaskets will leak air,,and cause hard start,bad running.
Or,,if Carb has ever been removed ,,,it's tuff to get them to re-seal without using new gaskets.

Ignition System/Spark Plugs:
Most of the late model versions all have electronic ignitions.
They usually work OK,,,and are Usually NOT adjustable.
When they FAIL,,,almost always it fails like a Light Bulb.
They just Quit Working at all,,,,no mysterious misfires,,no intermittent problems that come & go.

So IF it sparks,,and eventually Runs,,,
there's 99% Odds the CDI Ignition is working OK.

Spark Plugs.
Try an NGK Iridium Plug.
DO NOT expect it to "FIX" anything,,or even Cover-Up any sort of problems elsewhere.
Make sure everything Else is in good order First.

They are NOT Magic Plugs,,,but they DO improve starting because they can fire under a much wider range of conditions,,including Weak Ignition system,,,or partially flooded,,,very cold temps,,,etc,etc

They're expensive ,$8~10.
It Wont FIX anything,,but they can definitely help

Get a Service Manual if you can.

If You cannot find one,,,early Honda 50 & 70 Manual is Close enough to give You general basics

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You will have to register,,but You can get Free Manuals here
http://www.repairmanualclub.com/

These will help.
Remeber,,these are NOT Identical to Yours,,not even the same engines,,70's and 90's are Different.
But they can give you an idea how the things are laid out,,,and valve adjustment,timing chain stuff is basically the same.
Carb Clean/Rebuild PROCEDURE is sorta generic,,,things like that.

Consider them only HINT,CLUE,or GUIDE,,,,and NOT actual,accurate service manuals for Your bike

Honda S90-CL90-C90-CD90-CT90 Shop Manual

Honda SL70, XL70K1 Factory Shop Manual, English

Good Luck with it

Sorry MrKnowitall, you are right on the 2 stroke, 110 and up is OK, but a 4 stroke will not start easily at less than 100 psi, Especially is kick start.

Tomcotexas

A 110 is kind of small I agree you’ll want something that you can learn with and also grow wih being you’re already 12 years old I recomend a yamaha ttr 125, or a honda crf150. Both these are great beginner bikes and good for jumping or just riding around. My 13 year old nephew has a ttr 125 and loves it, he’s smaller in size and can handle it very well. Yamaha makes great everything, I love all their 4 stroke stuff and i’m mostly a suzuki fan, I would say yamaha is the leader in 4 strokes and makes the best around. The honda crf150 is a great bike also, a little more power than the ttr125 but not any heavier and will grow with you forever, i’m an adult rider and would be comfortable on a crf150 for just riding around. Take a look at these two bikes and ask dealers some questions even if you don’t buy from them it’s good to ask the pro’s they’ll be able to answer anything else that we can’t on here.

The first thing I'd try is to do a google search for the type of bike you're talking about. There's got to be someone out there that carries what you're looking for. If that doesn't help any then I'd agree with the suggestion of ebay.

www.dirtytires.com/forums

First of all theres probably a good reason you havent heard of it
its because these china bikes come with so many different names so many different designs that well .. you can never track down a manifacture or dealership to get parts for them when they break
just an example of how many diff names they slap on them to keep you from finding a real manufacturer
here we have the (speed) 110
http://www.guiamotera.com/minimotos/fotos/dirt_bike_110_eco/dirt_bike_110_eco-1.jpg
and here is the eagle? .. not sure what it says
http://www.motorxtremes.com/images/newprod_pics/110dirt_bike.png
and then the nameless
http://img.alibaba.com/photo/50229413/Alloy_Dirt_Bike.jpg
and the ..defiant? ..
http://www.alibaba.com/product-gs/202492920/Dirt_Bike_HC_119C_dirt_bike.html

see a pattern?..

its a 110 .. and im sure ur thinking hey a honda cr125 is a big bike this is only a few ccs smaller
no….
this bike is considerd a pit bike suitable for 5 yearolds to break before they move up to a real bike

it just depends what its worth to you… if you know how to work on them .. and feel like a pain in the neck
go for it
if you want to wait for a good deal or spend a few extra dollars on a used name brand bike .. well that would be a better idea
check out ebay/ craigslist the local classifieds/news paper

yes its a copy of honda but .. the machine work, cast work, grade of metal ect ect is all a little different .. soooo …. if they cant make a product they canstand behind enough to put a straight brand name make and model .. then im not going to trust it

get a name brand jap bike, suzuki kawasaki yamaha honda ktm anything with one of these names on it .. will be a pretty dependable bike

Make sure the choke is on.

You were foolish to buy a vehicle without being able to immediately see the title to insure it was free and clear. This whole thing sounds bad because you still owe them. There is nothing to for you to sue them over. Either you pay them the remainder and hope they will provide the title or they can repo the bike from you if you don't pay.

You probably should not go for anything much bigger than a 125 your heigth probably wouldn't let you get anything much bigger than that. They are fun but be careful.

Depends if you want fast or slow:

If you are looking for POWER and JUMPING, get a CRF150R or a KX100 (or YZ85 or CR85 for tight, small trails)
Pro's: They are the perfect size; not to small like the 85's, but not too big like the 125's. VERY light and quick
Cons: A bit rare, more noisy than trailbikes.

If you are looking to PUTT AROUND in local TRAILS with no intention of going fast or jumping (sort of boring if you ask me), get a TTR125L or a CRF150 trailbike.
Pro's: Quiet, more common, less gas consumption
Con's: Very Heavy, Sluggish, Poor suspension at best

Its up to you man, but I had both, and the trailbike is nowhere near as thrilling as the fast, light bike. Just don't let a sales person force you into buying a big bike you are not comfortable sitting on, or can't pick up when tipped over.

Heer ya go………http://store.scootertronics.com/xtxm70pitbi.html