Manual for motor FM_VM R5_R7 ( Date of publication 01/2018)
FIALA PROP s.r.o, Vysoká 56, 75641 LEŠNÁ , Czech Republic , e-mail: [email protected]
www.fialaprop.com
Page 3
1.
Motor aplication
Motors VM R5-250, VM R5-420 a VM R7-800 are 4-stroke gasoline motor with volume 250, 420 and
800 ccm and are designed for use in model aircraft. They are not designed or recommended for any
other use.
2.
Description of the motor
They are a 4-stroke motor with OHV and 2 valves per cylinder. Microprocessor ignition for easy
starting and smooth running in all modes of engine speed. Dimensions and more information you can
also see on our web
www.fialaprop.com
On
FB Fiala Prop
and
You Tube channel Fiala Prop
you can see many informations including video
manual how to start 4-stroke motors VM / FM, which is different from similiar 2-stroke motor
starting.
The
Common instructions for the
FM / VM 4-stroke engines
,
Attachement to manuals for radial 5-
cyl. and 7-cyl. petrol engines FM / VM, PowerFuel RX electric fuel pump Fiala
is
also annexed to
this manual.
3.
Fuel
Use unleaded gasoline with a minimum octane 95 mixed
with synthetic oil designed for two-stroke
engines.
For running we recommend 1:25, after running 1:30. Run-in should take about 2 hours of operation.
We recommend Valvoline oil - SynPower 2T - Full Synthetic, Mobil 1 - Racing 2T - Full Synthetic or
Repsol - Moto2T Racing. If you are not sure about the suitability of oil, which is going to use, contact
authorized service center or the manufacturer directly.
4.
Propeller
For these motors we recomended following Fiala propellers:
VM R5 - 250 – 2-blade : 32/20; 34/16; 34/18
3-blade: 30/18
VM R5 – 420 – 2-blade: 38/24; 40/20; 42/20
3-blade: 38/20; 40/20
VM R7 – 800 – 2-blade: 48/22 – 59/20
3-blade: 45/24 - 50/20
Best results you get with Fiala propellers.
