panthera PM07-18 User manual

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Panthera engine owner manual
PM07-18
Read this manual carefully it contains important information.

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Introduction
This manual was produced by Panthera° Motorsports inc. and describes operation procedure and
service procedure of the PM07-18 engine.
We recommend that your read this manual before installing and using your Panthera engine. The
manual contains a detailed list of topics in the table of contents.
Follow the Maintenance schedule recommendation to ensure the engine is always in peak operating
condition.
This publication includes the latest production information available before printing. Panthera
Motorsports reserves the right to male changes at any time without notice and without incurring any
obligation.
Disclaimer
This engine is sold as is, with all faults, obvious or concealed and there are NO WARRANTIES expressed
or implied. Including warranties of merchantability or fitness for purpose.
The purchaser accepts all responsibilities concerning quality, performance, cost of service and/or
necessary repairs.
This engine is a competition engine only. The use of this engine should be limited to participation in
sanctioned competition event upon a closed course.
Read owner’s manual.

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Contents
Introduction................................................................................................................................................ 2
Disclaimer ................................................................................................................................................... 2
Safety.......................................................................................................................................................... 4
Basic operation ........................................................................................................................................... 5
Pre-ride inspection.................................................................................................................................. 5
Starting procedure.................................................................................................................................. 5
Electric start engine ............................................................................................................................ 5
Kick start engine.................................................................................................................................. 5
Flooded engine ....................................................................................................................................... 6
Electric start engine ............................................................................................................................ 6
Kick start engine.................................................................................................................................. 6
Stopping procedure/stop switch wiring.................................................................................................. 6
Shifting gear............................................................................................................................................ 6
Race maintenance schedule ....................................................................................................................... 7
Taking care of the unexpected.................................................................................................................... 8
If the engine won’t start ......................................................................................................................... 8
High coolant temperature....................................................................................................................... 8
Technical information................................................................................................................................. 9
Engine specs ........................................................................................................................................... 9
Fuel and lubricants.................................................................................................................................. 9
Torque specifications............................................................................................................................ 10
Altitude/temperature carburetor adjustment ...................................................................................... 11

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Safety
Always ride within your limits. Major cause of motorsport crashes comes from riding beyond your
personal abilities. Alcohol, drugs, fatigue and inattention can significantly reduce your ability to make
good judgement and ride safely.
Alcohol and riding don’t mix. Even one drink can reduce your ability to respond to changing condition
and your reaction time gets worse with every additional drink.
Keep your vehicle properly maintained and in safe riding condition. To help avoid problem, inspect your
vehicle before every ride and perform all recommended maintenance.

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Basic operation
Pre-ride inspection
Transmission oil
Check the level and add oil if needed
Check for leaks
Radiator coolant
Check the coolant level and add coolant if needed
Check for leaks
Fuel
Check the level and add fuel if needed. Also make sure the fuel fill cap is
securely fastened.
Check for leaks
Throttle
Check for throttle freeplay and adjust if needed. Press the throttle to
make sure it moves smoothly without sticking and snaps shut
automatically when it is released.
Clutch actuator
Check for smooth operation and adjust freeplay
Kill switch
Check for proper function
Starting procedure
Electric start engine
1. Turn the fuel valve on and ignition switch on
2. Confirm the transmission is in neutral
3. Confirm the engine stop switch is set to RUN
4. Pull the choke know up all the way to ON position if the engine is cold.
5. With the throttle closed, press start button
a. Pressing the electric start button for more than 5 seconds at a time may cause the
starter to overheat and damage the starter. Release the start button for approximately
10 seconds before pressing it again.
6. After the engine start, push the choke knob back to OFF position to keep fast idling.
7. If idling is unstable, open the throttle slightly.
Kick start engine
1. Turn the fuel valve on and ignition switch on
2. Confirm the transmission is in neutral
3. Confirm the engine stop switch is set to RUN
4. Pull the choke know up all the way to ON position if the engine is cold.
5. Lightly depress the kickstarter until resistance is felt. You will feel two resistance close to
another then a long free play. Stop right before the first of the two resistance. (Before TDC)
6. After the engine start, push the choke knob back to OFF position to keep fast idling.
7. If idling is unstable, open the throttle slightly.
High air temperature 30°C (86°F): Do not use the choke.

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Flooded engine
If the engine fails to start after repeated attempts, it may be flooded with excess fuel. To clear a flooded
engine:
Electric start engine
1. Put the engine stop witch at off.
2. Push the choke know at OFF
3. Open the throttle fully
4. Press the start button for 5 seconds.
5. Wait 10 seconds, then turn the engine stop switch to RUN.
6. Repeat the electric start engine normal starting procedure.
Kick start engine
1. Put the engine stop witch at off.
2. Push the choke know at OFF
3. Open the throttle fully
4. Repeat kick start operation approximately 10 times to discharge excessive fuel from the engine.
5. Repeat the kick start engine normal starting procedure.
If the engine still won’t start, refer to the ‘’If your engine quit or won’t star’’ page.
Stopping procedure/stop switch wiring
Engine stopping signal must be sent to the black wire of the CDI unit. (refer to wiring diagram)
The black wire must be sent to engine ground in order to stop the ignition spark.
Shifting gear
The shift lever is located on the left side of the engine. One full stroke of the shift lever shifts the
transmission to the next higher or lower gear in the shifting sequence. The shift lever automatically
returns to the horizontal position when released.
PM07-18 engine as six forward gears (1,2,3,4,5 and 6). To upshift, raise the shift lever a full stroke. To
downshift, depress the shift lever a full stroke.
Neutral is located between 1st and 2nd gear. To put engine in neutral, softly half stroke the shift lever
from 1st going to 2nd or from second going to 1st.

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Race maintenance schedule
I : Inspect
C : Clean
R : Replace
ITEM / FREQUENCY
Initial
maintenance
Each race or
about 2.5 hours
Every 4 races or
about 10 hours
Every 9 races or
about 22.5 hours
Throttle operation
I
Air filter
C
Spark plug
R
Radiator coolant
Flush after 1st
ride
I
Transmission oil
Flush after 1st
ride
R
Piston and rings
R
Piston pin and small
end bearing
R
Head o-rings
R
Head carbonizing
C
Balancer bearings
I
Clutch plates
I

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Taking care of the unexpected
If the engine won’t start
SYMPTOM: Starter motor doesn’t operate (e-start motor only)
POSSILE CAUSE
WHAT TO DO
Ignition switch OFF
Turn the ignition switch ON
Blown fuse
Replace with a new fuse of the same rating
Battery lead loose
Tighten the battery lead
Low (or dead) battery
Charge the battery. If charging doesn’t help, get the battery tested.
Faulty starter motor
If all causes are negative, the starter motor may be faulty. Replace
the starter motor.
SYMPTOM: Starter motor works, engine won’t start
POSSILE CAUSE
WHAT TO DO
Ignition switch OFF
Turn the ignition switch ON
Out of fuel
Fill the tank and make sure the fuel petcock is open
Flooded engine
See flooded engine page 6
Loose or unconnected spark
plug cap
Install the spark plug cap securely
Unplugged coil signal wire.
Reconnect the signal wire to the ignition coil.
Faulty stator
See stator inspection procedure. Replace the stator if faulty
Faulty stator
See stator inspection procedure. Replace the stator if faulty
High coolant temperature
-A steaming engine indicates a coolant leak. Shut the engine off and way until the steaming
stops. Look for a leak, but don’t touch the engine or radiator system. Let everything cool off
first.
-Check for any restriction of air flow through the radiator.
-If the reserve thank is low or empty, don’t ride without adding coolant.
-

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Technical information
Engine specs
Displacement
548 cc
Bore & Stroke
94.0 x 79.0
Compression ratio
12:1
Spark plug
BR8ES
Spark plug gap
0.56-0.64mm
Idle speed
1500 ± 100 rpm
Primary reduction
2.11
Gear ratio
1st
2.87
2nd
1.81
3rd
1.5
4th
1.25
5th
1.05
6th
0.88
Fuel and lubricants
Fuel recommendation
Unleaded fuel, 94 octane or higher
Fuel oil recommendation
Motul 800 2T
Fuel oil mixing ratio
40:1
Transmission oil capacity
1.8 L at disassembly
1.5 L at oil change
Transmission oil recommendation
Klotz flex drive 30
Cooling system recommendation
High quality ethylene glycol antifreeze containing
corrosion protection inhibitors specifically
recommended for use in aluminium engines.

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Torque specifications
Item
Thread dia x pitch (mm)
Torque Nm (ft-lb)
Generic
5 mm nut and bolt
5 (3.6)
6 mm nut and bolt
12 (9)
8 mm nut and bolt
22 (16)
10 mm nut and bolt
35 (25)
5 mm bolt
4 (2.9)
6 mm bolt
10.5 (7.5)
8 mm bolt
12 (9)
Maintenance
Oil check bolt
8 x 1.25
12 (9)
Oil drain bolt
12 x 1.5
30 (22)
Cooling system
Coolant drain bolt
6 x 1.0
10 (7)
Water pump cover bolt
6 x 1.0
12 (9)
Water pump impeller
6 x 1.0
12 (9)
Cylinder Head/ Cylindre
Spark plug
14 x 1.25
18 (13)
Cylinder head nut
8 x 1.25
27 (20)
Cylinder mounting nut
10 x 1.25
40 (29)
Cylinder stud bolt
10 x 1.25
12 (9)
Decompressor
10 X 1.0
27 (20)
Clutch/transmission
Clutch spring bolt
6 x 1.0
10 (7.2)
Clutch center lock
20 x 1.0
90 (65)
Primary gear bolt
12 x 1.25
70 (50)
Drum shifter set plate bolt
6 x 1.0
10 (7)
Balancer nut
16 x 1.0
70 (50)
Sprocket bolt
8 x 1.25
27 (20)
Kick start lever
8 x 1.25
27 (20)

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Wiring diagram

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