huasheng 142f 49cc what oill? how much? :)

Discussion in 'General Questions' started by joshua97, Oct 6, 2013.

  1. joshua97

    joshua97 Member

    hi just wondering what oil should i use in my 49cc motor? its my first 4 stroke! (built over 15 two strokes) ? i think 10-30 is the one but not sure and synthetic or not? and would 10-30 motul dirtbike oil be okay? please help thanks :)

  2. butterbean

    butterbean Well-Known Member

    I use Shell Rotella T triple protection 10w-30. Its conventional (not synthetic) but its diesel oil, so its got additives you wont find in synthetic oil, such as zinc, which is good for engines. Your hs engine should hold 8 oz of oil. I dont have a hs though, I have a minibike engine, but rotella should work fine for you.
  3. grinningremlin

    grinningremlin Active Member

    Break it in with dino, then move to Mobil 1 of your choice.If you don't care just make sure to change regular, as long as it's fairly clean these little engines are happy.
  4. joshua97

    joshua97 Member

    thanks guys i put in briggs and stratton SAe 30 motor oil, i hope thats okay? and its running ok, seems like its revving way too high on full throttle tho? stock china ebay kit gearbox and 44 tooth sprocket, thanks
  5. HeadSmess

    HeadSmess Well-Known Member

    its a cheap industrial engine. if the bottle says "engine oil", use it :) anything else is wasting money.

    how fast you going? 44t is irrelevant without tyre diameter.

    sounds like ahoot gearbox which is a POS and soon the conrod will snap... try a 36 or even 28 tooth...
  6. joshua97

    joshua97 Member

    yeas 26" big heave coco cola steel cruiser. i use a custom HD wheel with sprocket on hub and cant really chang gearing, ill buy a tacho tho, its 7800 rpm redline right? and thanks
  7. IbedaYank

    IbedaYank Member

    let me see if I understand this... you do not know what oil to run but yet you swear you POS hoot type trans is reliable???? Butter soft sprockets and chains that stretch within 300 miles and can not be adjusted. NONE have been known to last 5000 miles unlike a 4G or a Qmatic.
    You have a clone of a Honda GX50... now look up an owners manual for that motor and will give you that information plus what to set valve lash at and how.
  8. HeadSmess

    HeadSmess Well-Known Member

    surely the hub was set up so the sprocket is replaceable?

    on a 26" wheel...without knowing exactly what gearbox you have... 44t is usually right. you live where its flat and can go with lower gearing, or have enough steep hills to warrant it revving but able to conquer any hill?

    i wouldnt take it too far past 7800 as redline.
  9. joshua97

    joshua97 Member

    thanks, i have had 4 of these motors and trans before, used 10-40 mx bike oil but told it was wrong so i asked here, i also got a tacho today and on the flat she does 41kph :-/
    and at 7,650 ish rpm? if im happy with speed- i cruise at 35 max is this ok? :)
  10. KCvale

    KCvale Motorized Bicycle Vendor

    I like the HS 49cc, I get the gasbike center mount 4-stroke kits with the 4G belt drive and just use whatever cheap non-synthetic 30w oil is handy for the first hour of operation, then change it to whatever synthetic oil is on sale for use from then on.

    Just an oil change tip...
    Do it often and make it easy and clean to do with a little tool like a big syringe and piece of gas line.


    I don't know where you buy them, these were used for giving my Pop's med's through his stomach feeding tube before he passed but they sure make it easy to remove the old oil and then put in new oil.


    Forget about the useless dip stick, just fill until the oil hits the bottom of the threads of the fill hole.

    One more tip...
    Keep an empty oil bottle around to discard the old oil but but before you squirt it in squirt some on your chains ;-}
  11. IbedaYank

    IbedaYank Member

    so what one is it your 1St or 5th 4stroke motor???
  12. joshua97

    joshua97 Member

    its my 5th
  13. joshua97

    joshua97 Member

    Thanks a heap KCvale, i will order a huge 250 ml syringe off ebay- found 1 yay for $11 delivered and 250 is also the oil capacity too yay. and so the first line of thread closest to the motor, ok thats heaps easier cheers :D
  14. KCvale

    KCvale Motorized Bicycle Vendor

    You're welcome ;-}
  15. krealitygroup

    krealitygroup New Member

    Got a quick question for you. So if my engine (which is new) is running hot.. Would it be that I didn't put enough oil in?? I was told only fill to the top of the dipstick.. Yesterday I did a 20 mile run.. Then this morning I did a couple of blocks and the engine was hot.. I Let it cool, and did a 3 block run, and it didn't run that hot..

    I also hear that idling is not good for these.. Am I missing something?
  16. crassius

    crassius Well-Known Member

    I got a box of 50 at a dental supply - they use them to inject filling material into a cavity.
  17. butterbean

    butterbean Well-Known Member

    Unless you removed the pullstart cover, the flywheel fan should keep it cool at idle. In my case, I removed the flywheel cover off my predator engine for a more vintage look as I can just wrap a rope around the starter pulley but I don't recommend it for the little 49cc's. The predator doesn't rev quite as high as the hs engine, so overheating isn't as much of a concern.
  18. The_Aleman

    The_Aleman Active Member

    It's normal for the engine to get hot, it's an engine. One that has a little explosion in it's cylinder roughly 8 times a second at idle. Are you running the plug that came with the kit?

    The kit spark plug for these is usually hotter than it needs to be. I suggest getting an NGK CR7HSA or better yet, a CR7HIX. Much better than the kit plug.

    it's okay for the engine to idle, it has it's own cooling fan. Remember, this is an aircooled engine, temperatures will vary quite a bit. Hot, to a point, is absolutely normal.
    Last edited: Aug 30, 2015
  19. jhewitt3476

    jhewitt3476 Guest

    any pharmacy or grocery stores/dollar stores will have those of all sizes for less than $3...$11 online was a waste of time and money, sorry dude :(