Messages

1

Maico / Re: 490 Mega 2 crankshaft seals

« on: July 22, 2014, 03:39:02 pm »

Thanks Kevin, I'll give it a go.

Regards

2

Maico / 490 Mega 2 crankshaft seals

« on: July 22, 2014, 10:55:17 am »

Can I change these without major disassembly? Can I use self tappers and a slide hammer to pull them out?

Thanks

3

Maico / Re: Starting a 490

« on: July 15, 2014, 02:05:53 pm »

Thanks all. My problem may well be more than one thing.

How did you but the HPI ignition KTM47? Ebay?

Can I change the crankshaft seals without spliting the cases?

4

Maico / '81 490 aftermarket ignition

« on: July 15, 2014, 10:05:00 am »

Hello Gents, if I did spit the plug with the Motoplat and decide to buy an aftermaret system, what would you recomend?

Thanks

5

Maico / Re: Removing a 490 decompressor

« on: June 14, 2014, 12:41:47 pm »

Thanks Paul, I found a 22mm impact socket deep enough to get it out, but when the cable is fitted I will need a tube spanner to put it back in. A shame they did not make it the same size at the spark plug

regards

6

Maico / Removing a 490 decompressor

« on: June 13, 2014, 04:49:41 pm »

It looks like a hex but I have no socket deep enough to grip it. How do I get this out?

Thanks

7

Maico / Re: inlet and airfilter rubbers Maico

« on: June 06, 2014, 02:32:43 pm »

 does the rubber manifold replace hte aluminium one?

8

Maico / Re: Starting a 490

« on: June 05, 2014, 01:01:38 pm »

Motoplat ignition fitted Sleepy. I dont think I'll be attending the gym, maybe the emergency dept if I do the the bastard going as I havent ridden a dirt bike for years.

A 250 would be smart Rossvickicampbell, but then I've never been accused of being smart!

I'm now out the bush at work until Tuesday so there will be no progess until then.

I will be replacing fork seals next week, any tricks I need to know (I've done them in road bikes many times). What weight oil and how much?

Thanks all.

9

Maico / Re: Starting a 490

« on: June 04, 2014, 05:34:17 pm »

OK, my decompressor is not working so that will be a good start, (I have parts on order).

Are there timing marks on the rotor to check the advance with a timing light?

What does 2.2mm relate to in degrees?

Do these Motoplat ignitions advance the timing automatically (electronically?)

I dont need Maccas Sleepy, I'm a fat bastard!

Thanks all

10

Maico / Re: Starting a 490

« on: June 04, 2014, 09:02:52 am »

OK, thanks all. That gives me plenty of things to look at.

Does anyone have a PDF owners or workshop manual for a 490?

Regards

11

Maico / Starting a 490

« on: May 31, 2014, 03:28:13 pm »

Hello Gents
I've just picked up my new toy, a 81 490.
A few questions:
Fuel/oil ratio?
Spark plug type?
I'm having trouble getting a consistent spark, coil resistance is 33ohms, and the pick up is 6.5ohm, sound right?
Assuming the poor spark is normal, what is the starting secret, carb tickle? Throttle opening?
Any advice welcome.

Regards