Break In How to properly break in a motor

[bamabikeguy]

I'm just passing on info that the owner of local Standard Gas Distributor gave me in a half hour conversation. Majors have a little device on the pumps that shuts the whole thing down if a half teaspoon of water gathers in the filter, cost the station owner $12 for the technician to click back on.

(when you see the bag over the pump handle, they are waiting for the technician to come clean the filter).

I was running 87 pre-June 2008, then some Standard 87 ran like cr*p, and I found out everybody switched (except Conoco), and they didn't put labels notifying the public.

The Stihl chainsaw dealers recommended the 89, and that is what I use. Not as good as old 87, but nearly as good.

Thats why I think you can experiment with 87 after 500 miles. Gas acts different in different locations, I don't know where you live, so 87 might really be best.

91 and 93 octanes are out of the question.

I agree with you on the conventional....synthetic after maybe 1,000 miles, or even Amsoil once it hits peak performance. That is what I heard long ago.

My problem is I'm constantly breaking in new engines, so on my own personal Tanaka, the only time it gets Amsoil is when its out on the long distance rides, mixing as I go.

But it is up in the >5,000-6,000 mile range, I'm sure.

 

[Mountainman]

have fun as you break that MB thing in

3. Vary the throttle for small trips

#3 above -- very important -- up here on top the mountain

not going above 2/3 throttle for a while

a nice slight variation of speeds from between 1/3 to 2/3 throttle

first four or five rides -- 20 minutes each -- cool down period of 15 min inbetween

a nice rich oil to gas mixture while breaking in

these thoughts regarding proper break in change a little over time
but -- I think you have the idea

have fun as you break that MB thing in

 

[echotraveler]

hey guys thanx for the advise!

i have in my tank almost a gallon, so i poured the 2 cycle oil from sears, alsmost the whole thing, a little more than what the instruction say...it think it worked great, good sound motor, and no bad smoke either.

but i did pour 93 octane gas....i guess its not gonna make a big differece, does it?

 

[bamabikeguy]

but i did pour 93 octane gas....i guess its not gonna make a big differece, does it?

The reason I can't honestly say is I've never done that....OR, the one time I did it, in Oberlin Kansas, I got a bad batch of generic 91 and vapor locked to the next town, where I dumped it at a small engine repair shop.

But my mind was scrambled on that whole 3,000-5,000 ft. altitude, I was blaming the gas for the duration until I dropped back into dead armadillo Oklahoma (under 3,000 feet range).

Next tank, try 89, just a tad leaner, see if YOU feel a difference. You can add a bit more oil, but you can't subtract it.

Anything that exceeds recommendations during the break in is good, EXCEPT thinking 91-93 is "better".

Its not, and I forgot everything I learned in High School chemistry/physics, as to why that is so.

 

[350zdrftr]

The gas in my area seems to be pretty good so I am going to try 89 at first and see how it reacts to it. If i feel like it does well i will step it down to 87 . I hate the thought of using 87 though I guess it just something in my head cause my car only takes 93 and it just trips me out!!!!! lol , so does that sound like a descent plan?

 

[bamabikeguy]

Like I said, and this may be a**backwards, 87 burns hotter than 93, it takes hi-tech computers to ignite 93.

87 is more like a cheap chinese firecracker, sssssss-pop.

I'll stay at 89, but that is apples and oranges, stick with the one that works best.

The diff is like .08 cents either way.

 

[350zdrftr]

sounds good , then I should be able to tell a difference when I switch to 87

 

[Junster]

High octane gas takes longer to burn than low. So a high compression engine the mix burns slightly slower and stops pre detonation. Not really a problem for these motors. But higher octane fuels usually have less ethanol to maybe better for us. As far as the original topic. A company I looked up that professionally breaks in 2 cycle jetski's for racing teams sez. Start and Idle run about 3-5 minutes shut down and allow to completely cool for at least 20 minutes. Drive in just above Idle for 5 minutes shutdown 20 minutes. Again with tiny throttle blips. It goes on and and on. I did this with a Polaris jetski it did work but it took all day and half the next (the ski cost 11k not $150). I think Mountain Man is about right with his suggestion. I would however do the initial 5 minutes idle then shutdown till cool. It sets the bearings. Good Luck, most say to not use synthetic till after it's broken in.

 

[Mountainman]

should you be able to tell the difference ??

then I should be able to tell a difference when I switch to 87

tell the difference ?? -- hard to say

but just a note
most of these little engines are made to run best on reg 87

it's a good THING

 

[350zdrftr]

exactly if i run 89 to be safe, then i should be able to tell a difference when i switch to 87, but its ok i am just starting and sticking to 87