Minari 180 & 200 specifications
Before putting any paramotor in service, new or used, CHECK THE TORQUE of the head nuts!
Clutch, bearings, manual start – inner bearing 17x35x10 SKF 6003 2RSH C3; outer bearing 15x32x9 SKF 16002-2Z (these bearings are better than OEM)
Cylinder gasket squish – 1.3mm -1.5mm (0.051"-0.59")
Engine compression – 90 psi at sea level; 4,000' MSL 80 psi. These values are approximate. Pressures are low because of the decompression port.
Engine cylinder head temperature – max 200ºC - 220ºC (390ºF - 428ºF). You will destroy the engine if you run it at temperatures higher than this for more than a few minutes!
Engine, main bearings
- pulley side: KOYO 83A915-SH2-9TC4 25x55x15 (this is a typical motorcycle engine bearing, high quality)
- flywheel side: ORS 6304 C3 20x52x15 or, better, KOYO 6304 C3 (a medium duty bearing)
Engine, main seals, dual lip – pulley side NAK TF 25x47x7; flywheel side NAK TF 20x47x7 – SEALS MUST BE IDENTICAL TO THE NAK TF!!
Engine, pulley – Use Top 80 clutch puller w 6mm bolts and 8mm flange nuts under the bolt heads to remove. Heat not necessary.
Engine, parts diagram (non-clutched engine)
Engine, piston-cylinder clearance – 0.04mm - 0.10mm (.002" - .004") Example of how to measure piston-cylinder clearance
Engine, ring gap – 0.45mm - 0.55mm (.018" - .022")
Engine RPM, maximum – 8,000-8,300
Engine temperature, normal operating temperature 200ºC-220ºC. Minari allows 220ºC-260ºC but I do not recommend operating at these temperatures
Exhaust nuts – these nuts are prone to loosening. Use RED threadlock on them.
Ignition, coil – IDM #150 (same as Top 80), coil must be installed with wiring facing out
Ignition, coil gap – 0.33mm (0.013")
Ignition coil primary resistance – 5 Ohms or less (but not zero)
Ignition coil secondary resistance – 8.2K Ohms ±10% (measure with a needle stuck into the secondary wire right where it comes out of the coil)
Ignition coil resistance + OEM secondary wire resistance – 17.5K Ohms ±10%. With our secondary kit installed, the value will be 8.8K Ohms ±10%. Note: Minari, like Miniplane as of 2018, may soon use the better ignition coil supplied by IDM. The new secondary wire resistance is <15 Ohms which is the same as the secondary wire we supply in our replacement kits.
Ignition coil to flywheel gap – 0.38mm (0.015")
Parts diagram – see "Engine, Parts diagram" above
Piston ring gap – see "Engine, ring gap" above
Propeller bolts – qty (6) 55mm x M8 70mm x M8 90mm x M8 depending on the propeller construction.
RPM maximum – see "Engine RPM, maximum" above
Spark plug – NGK BR8ES (cold weather); BR9ES (hot weather) This spark plug is a resistor type in order to help suppress ignition noise. The B8ES or B9ES can also be used without any problems but you may notice more radio interference.
Spark plug gap – 0.7mm-0.9mm (0.027" - 0.035") Always set the gap to the minimum. The greater value is the maximum value, not the range. You cannot gap the plug correctly without a wire-type gauge!
Speed system pulley – Harken H404 (superior to any of the OEM brands, especially Viadana)
Starter cord pulleys – Harken 082 (superior to the OEM Viadana)
Threadlock – read this important page on threadlock and how to use it and when NOT to use it.
Timing – clutched engines 15-16º BTDC; non-clutched engines 18-19º BTDC.
Weight, dry – 24 kg (53 lb) manual
start, no fuel, includes the complete Miniplane frame. Add 1.1 kg (2.4 lb.) for electric start
NOTE: The exhaust nuts (#18) are prone to loosening. Use RED threadlock on them.
Torque values – This handy page was created by Frank Hoffmann and was gathered from experience and the values given on page EN17 of the Minari User Guide. The Minari guide is not very useful because it has too many values missing and some errors e.g. "carter screws" should be "starter screws". Go to the Top 80 specification page to read the torque section if you cannot find the value you need in Frank's page or the Minari User Guide. The Top 80 page has a discussion on torque and why different value must be used sometimes.
The Italian paramotor manufacturers continue to use button-head screws on their engines, regardless whether they are needed or not. Button-head screws have soft heads which make them very easy to strip with a hex bit when attempting to remove them. Replace them with hex-head or socket-head screws, as necessary. Go figure....
Use a Sharpie to write reminders on the top of the redrive (or other semi-flat area). Any other method will not be as effective. They are easily removed/changed with mineral spirits. This way, you won't forget. You have an hour meter/tachometer installed right?
ALWAYS check the torque of the cylinder head nuts after a few hours on new engines or engines that have had cylinder head maintenance!
First 1 hour
Belt tension – new belts loosen up very quickly and must be re-tensioned after an hour or two use.
NEW engines – Italian QC is poor and factory technicians routinely make serious errors assembling engines. Here are the most common that I have seen:
- Head nuts not properly torqued down (20 Nm).
- Studs in engine not installed with red threadlock: Exhaust port studs should be checked for threadlock. If they can be easily removed, they WILL come out at the most inconvenient time.
- Muffler mounting screws – Remove them, put blue threadlock on them, and reassemble. DO NOT OVERTORQUE! The threadlock is what holds the screw in place.
Every year (minimum)
- Rebuild the carburetor, including replacing the pop-off spring.
- Replace the fuel filter.
- Change the oil in the redrive.
- Replace the spark plug.
- Check the ignition.
- Replace fuel system hoses if ethanol gasoline is used and the hoses are stiff.
- Check the torque of the cylinder head nuts, especially if you run your engine at or near sea level.
After the 1st hour
Consult the Minari User Guide (on this site) for details on maintenance intervals and what to do. Note: Minari recommends that the piston (including the upper connecting rod bearing) be replaced every 200 hours. This is a very important task and must be done. Failure of this bearing will destroy the entire top end of the engine, including the connecting rod and crankshaft. Here is some how-to about this service.
Do not fail to clean the decompression hole every 100 hours or as needed, especially if AVGAS is used.